Automotive electrical systems
More informationAt Global Parts, we offer a wide selection of original used car parts, including automotive electrical systems for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.
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Make
Category
Subcategory
Condition
In Stock
Price
Part no. 1420000065
Audi A5 F5 Headlight Module LED Light Control Unit Front Left N/S 1420000065
£23.95
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 8X0971036AA
Audi A1 8X Front Passenger Side Door N/S Window Switch Loom Cable 8X0971036Q
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 1K0971250AD
Audi A3 Volkswagen Golf Battery Wire Cable Negative Earth Lead 1K0971250AD
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
Part no. 8W0907063BG
Audi A4 B9 Body Control Comfort Unit Module BCM Unit ECU 8W0907063BG
£51.95
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 8W0907063CG
Audi Q5 FY 2.0 TFSI DAXB Petrol Supply Body Control Module Unit 8W0907063CG
Promo price
£47.95
£28.77
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 4G0971765E
Audi A7 4G8 3.0 TDI Adblue Tank Pump Wiring Loom Harness Loom 4G0971765E
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 1K0971235J
Audi A3 Volkswagen Golf Battery Wire Cable Negative Earth Lead 1K0971235J
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 4H0907601A
Audi S4 B8 Alarm Siren Body Sound Impact Actuator Speaker 4H0907601A
Promo price
£28.95
£17.37
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 8K0907064HG
Audi Q5 8R Body Control Module BCM Comfort Control Unit 8K0907064HG
Promo price
£47.95
£28.77
Free delivery: Mar 02
If paid before 14:00
Part no. 4H0951253-1
Audi A3 8P Multi Use Control Module Relay 4 Pin Light Green Unit Set 4H0951253
£13.95
Free delivery: Mar 02
If paid before 14:00
Part no. 8P7907115L-1
Audi A3 8P 1.8 TFSI CDAA 160HP Engine ECU Kit Ignition + Key 8P7907115L Manual
£132.95
Free delivery: Mar 3 – 10
If paid before 14:00
-5%
Part no. 80C919616
Audi Q5 FY Multimedia Volume Control Button Switch Knob Head Unit 80C919616
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 5Q0971230ES
Battery Cable Audi A3 8V Starter Alternator Wiring Harness 5Q0971230ES
Promo price
£23.95
£14.37
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 8K5907551B-1
Audi S4 B8 3.0 TFSI CGWC 333HP Quattro Engine Control Module ECU Kit 8K5907551B
Promo price
£493.95
£296.37
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 8V0906259J-1
Audi S3 8V 2.0 TFSI DJHA 310HP Quattro Engine Module ECU Set 8V0906259J
Promo price
£284.95
£170.97
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 8K9035225
Audi RS4 B8 Radio Aerial Antenna Amplifier AM/FM 8K9035225
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 8X0971687D
Audi A1 8X Rear Door Harness Left Right N/O/S Wiring Loom Cable 8X0971687C
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 4F0959795M
Audi A6 C6 Rear Door Left Right N/O/S Module Unit Control ECU 4F0959795M
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 8R0907468D
Audi A5 8T 3.0 TDI Gateway Control Module Unit ECU 8R0907468D
Promo price
£28.95
£17.37
Free delivery: Mar 02
If paid before 14:00
Part no. 8W0971659B
Audi A4 B9 Dashboard Air Vent Wiring Loom Harnes Cable Passenger Side 8W0971659B
£13.95
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 03L906018JR-1
Audi A4 B8 2.0 TDI CJCB Engine Control Unit Module ECU Kit 03L906018JR Manual
Promo price
£237.95
£142.77
Free delivery: Mar 3 – 10
If paid before 14:00
Part no. 4K0915181
Audi A6 C8 Negative Minus Earth Cable Battery Wiring Harness 4K0915181
£56.95
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 8K9035225A
Antenna Amplifier Audi A4 S4 B8 Radio Aerial AM/FM 8K9035225A
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 5Q0907530S
Audi A3 8V Gateway Control Module Unit ECU 5Q0907530S
Promo price
£28.95
£17.37
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 5Q0907530AM
Audi A3 8V VW Passat B8 Gateway Control Unit Module 5Q0907530AM
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
Part no. 4M0907590D
Audi S5 F5 Blind Spot Radar Distance Control Module Left N/S Slave 4M0907590D
£132.95
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 03L906022FL
Audi A6 C6 3.0 TDI 233HP Diesel Engine Control Unit ECU Kit Module 03L906022FL
Promo price
£142.95
£85.77
Free delivery: Mar 3 – 10
If paid before 14:00
Part no. 6R0959772A
Audi A1 S1 8X Heated Seat Control Unit Relay Module Unit 6R0959772A
£23.95
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 8K0971104AC
Audi RS4 A4 B8 8K Parking Sensors Rear Bumper Wiring Loom 8K0971104AC
Promo price
£32.95
£28.01
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 5Q0971250AB
Audi A3 S3 8V Negative Battery Terminal Earth Cable Lead Wiring 5Q0971250AB
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 8X0959792K
Audi Q3 8U Front Door Module Control Unit ECU Passenger Side 8X0959792H
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 05E907309CA-1
Audi A3 8Y 30 TFSI 1.5 DXDE 115HP Engine Module Control Unit 05E907309CA Manual
Promo price
£237.95
£142.77
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 80A907247A
Audi Q5 FY Keyless Entry Amplifier Control Box Module Aerial Antenna 80A907247A
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 8J0937121A
Audi TT 8J MK2 Telephone Controller ECU Box 8J0937121A
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
Part no. 8U0971687B
Audi Q3 8U Rear Door Loom Wiring Harness Cable Left Right N/O/S 8U0971687B
£13.95
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 03L906022NN
Audi A4 B8 2.0 TDI 143HP CAGA Diesel Engine Control Unit ECU Module 03L906022NN
Promo price
£94.95
£56.97
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 8K5907551D-1
Audi S5 8T 3.0 TFSI CGWC 333HP Quattro Engine ECU Kit Ignition + Key 8K5907551D
Promo price
£284.95
£170.97
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 8Y4971104AP
Audi S3 8Y Rear Bumper PDC Parking Sensor Wiring Harness Loom 8Y4971104AP
Promo price
£61.95
£52.66
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 8T0035223AB
Audi A4 B8 8K A5 8T Sound System Audio Amplifier Amp Unit 8T0035223AB
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 4E0907279S
Audi A8 4E S8 D3 Comfort Module Electric Steering Column Unit 4E0907279S
Promo price
£18.95
£16.11
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 4H0907357A
Audi A7 4G8 Headlight Head Light Lamp Range Control Unit Module ECU 4H0907357A
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 571035284A
Audi S3 8Y Bluetooth Module Multimedia Control Unit Cover Unit 571035284A
Promo price
£246.95
£148.17
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 80A906093A
Audi SQ5 FY Petrol Fuel Pump Relay Control Unit Module ECU 80A906093A
Promo price
£23.95
£14.37
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 8P4963553A
Audi A3 8P Front Seat Occupation Sensor Left Right N/O/S 8P4963553A
Promo price
£22.95
£19.51
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. RHD-8X2971030L
Audi A1 8X Front Passenger Door Wiring Left N/S Harness Loom Cable 8X2971030K
Promo price
£18.95
£16.11
Free delivery: Mar 02
If paid before 14:00
Part no. 03L906018AJ-1
Audi A3 8P 2.0 TDI 170HP CFGB Engine Control Unit ECU Kit 03L906018AJ Manual
£113.95
Free delivery: Mar 3 – 10
If paid before 14:00
-40%
Part no. 4H0907468AC
Audi A8L 4H Gateway Control Module Unit 4H0907468AC
Promo price
£113.95
£68.37
Free delivery: Mar 02
If paid before 14:00
Part no. 4F1971693G
Audi A6 C6 Rear Door Wiring Harness Cable Loom Left Right N/O/S 4F1971693G
£13.95
Free delivery: Mar 02
If paid before 14:00
Part no. 03L906018JG-1
Audi A5 8T 2.0 TDI CGLC 177HP Diesel Engine Control ECU Kit 03L906018JG Manual
£142.95
Free delivery: Mar 02
If paid before 14:00
Part no. 4H0907063GG
Audi A6 C7 A7 4G Onboard Supply BCM Body Control Module Unit ECU 4H0907063GG
£161.95
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 02T911024JX
Audi A1 8X 1.2 TFSI CBZA Petrol Engine Starter Motor 02T911024JX
Promo price
£23.95
£14.37
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. RHD-4G2971228DQ
Audi A6 A7 4G 3.0 TDI Starter Alternator Wiring Harness 4G2971228DQ
Promo price
£23.95
£14.37
Free delivery: Mar 02
If paid before 14:00
Part no. 8N0959643A
Audi TT 8J Crash Impact Sensor Unit Air Module 8K0955557C
£13.95
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 7N0941329
Audi A3 8V 30 TDI DGTE Ad Blue Reducer Dosage Control Module Unit ECU 7N0941329
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 8Y0963554A
Audi S3 8Y Rear Seat Couch Occupancy Recognition Sensor Unit 8Y0963554A
Promo price
£18.95
£16.11
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 4G8971035AJ
Audi A7 4G8 Front Door Harness Wiring Loom Cable Driver's Side 4G8971035AJ
Promo price
£37.95
£22.77
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 4G8959760
Audi A6 C7 Front Driver Side Seat Control Module Unit 4G8959760
Promo price
£28.95
£17.37
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 8K1907115M
Audi A4 B8 A5 8T 1.8 TFSI CDHB 160HP Engine Control ECU 8K1907115M Automatic
Promo price
£132.95
£79.77
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 03L906018JN-1
Audi Q5 8R 2.0 TDI CGLC Quattro 177HP Engine ECU Kit 03L906018JN Lock + Key
Promo price
£161.95
£97.17
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 8W8971030AC
Audi A5 F5 Front Passenger's Door Wiring Harness Loom 8W8971030D
Promo price
£85.95
£73.06
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 4G8971029DQ
Audi A7 4G8 Front Door Harness Wiring Loom Cable Driver's Side 4G8971029DQ
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 8E0035192G
Audi A4 B7 8E Navigation System Car Sat Nav Computer Head Unit 8E0035192G
Promo price
£94.95
£56.97
Free delivery: Mar 02
If paid before 14:00
Part no. 5QA919294B
Audi A3 8V VW Volkswagen Golf VII PDC Park Assist Control Module Unit 5QA919294B
£18.95
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 8X0971035BS
Audi A1 8X Front Door Loom Wiring Harness Cable Right O/S 8X0971035AS
Promo price
£23.95
£20.36
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 4G8971036K
Audi A7 4G8 Front Door Harness Wiring Loom Cable Passenger Side 4G8971036K
Promo price
£37.95
£32.26
Free delivery: Mar 02
If paid before 14:00
Part no. 5Q0907441A
Audi A3 S3 8V Rear View Reverse Camera Module Control Unit 5Q0907441A
£123.95
Free delivery: Mar 02
If paid before 14:00
Part no. 8V0920790A-1
Audi A3 S3 RS3 8V Instrument Cluster Speedo Clocks Petrol Automatic 8V0920790A
£427.95
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. RHD-4E2907649
Audi A8 D3 Engine Unit Bracket ECU Module Holder Bracket Mount 4E2907649
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
Part no. RHD-4K2919603A
Audi A6 C8 Digital Screen Touchscreen Heater Control Panel Unit 8,6" 4K2919603A
£189.95
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 4K1907594CB
Audi S3 8Y VW Golf Mk8 Sun Roof Module Control Unit ECU 4K1907594CB
Promo price
£32.95
£28.01
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 8E5035503
Audi A4 B7 Antenna Amplifier Mobile Telephone Module Unit 8E5035503
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 8X0971036T
Audi A1 8X Front Door Card Wiring Harness Loom Cable Left N/S 8X0971036T
Promo price
£18.95
£16.11
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 8J0907274C
Audi TT 8J Tyre Pressure Control Module Unit 4F0907274
Promo price
£28.95
£17.37
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 8X0971693A
Audi A1 8X Door Wiring Harness Loom Rear Left Right N/O/S Cabling 8X0971693A
Promo price
£18.95
£16.11
Free delivery: Mar 02
If paid before 14:00
Part no. 8V0035036C
Audi A3 8V MMI Multimedia Interface Head Unit GPS Sat Nav Module 8V0035036C
£284.95
Free delivery: Mar 3 – 10
If paid before 14:00
-40%
Part no. 4H0959107AB
Audi A8L 4H Tailgate Lift Boot Lid Control Unit Module Trunk 4H0959107AB
Promo price
£75.95
£45.57
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 8H0959655E
Audi A4 S4 B7 Cabrio Air Module Control Unit ECU Impact Sensor 8H0959655E
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
Part no. 8E0837220Q
Audi A4 S4 B7 Remote Key Radio Alarm Key Fob Opener Button 8E0837220Q
£18.95
Free delivery: Mar 02
If paid before 14:00
Part no. 8U0971030AF
Audi Q3 8U Front Door Wiring Harness Loom Cable Passenger Side 8U0971030AF
£28.95
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 5Q0907530P
Audi A3 8V Gateway Control Module Unit ECU 5Q0907530P
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 8J0907159B
Audi TT 8J Alarm Signal Body Sound Impact Control Module Unit 8J0907159B
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 8W0959592M
Audi A4 B9 A5 F5 Front Door Module Control Unit ECU Passenger Side 8W0959592M
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 4M0937513J
Audi Q7 4M Fuse Relay Box Module Electrical Control Unit 4M0937513J
Promo price
£56.95
£34.17
Free delivery: Mar 02
If paid before 14:00
Part no. 8N0906018BH
Audi S3 8L 1.8T BAM Quattro 225HP Petrol Engine Unit ECU 8N0906018BH Manual
£322.95
Free delivery: Mar 3 – 10
If paid before 14:00
-40%
Part no. 8K9035382B-1
Audi RS4 B8 Boot Trunk Speaker Spare Wheel Holder Audio Kicker 8K9035382B
Promo price
£66.95
£40.17
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 8W0959593M
Audi A4 B9 A5 F5 Front Door Module Control Unit ECU Driver Side 8W0959593M
Promo price
£23.95
£20.36
Free delivery: Mar 02
If paid before 14:00
-5%
Part no. 4G0937517
Audi A6 C7 Fuse Battery Junction Box Fuse Distribution Terminal Centre 4G0937517
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 8P0907115AP-2
Audi S3 8P 2.0 TFSI CDLA 265HP Engine ECU Kit Ignition + Key 8P0907115AP Manual
Promo price
£308.95
£185.37
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. RHD-8T2035110C-1
Audi A4 B8 Disc CD Changer Player Reader System ESP PDC Switch 8T2035110C
Promo price
£28.95
£24.61
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 5Q0959595M
Audi Q2 GA Front Door Module Control Unit Controller Passenger Side 5Q0959595M
Promo price
£18.95
£16.11
Free delivery: Mar 02
If paid before 14:00
Part no. 4M0907401AM
Audi Q7 4M 3.0TDI DPXB Quattro 218HP Engine Control ECU 4M0907401AM Automatic
£655.95
Free delivery: Mar 3 – 10
If paid before 14:00
-5%
Part no. RHD-8K2907613B
Audi S5 8T A4 B8 4.2 FSI Engine Fusebox Cover Terminal Housing Cap 8K2907613B
Promo price
£13.95
£13.25
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 80A959655N
Audi Q5 FY Air Module Control Unit SRS System ECU 80A959655N
Promo price
£175.95
£105.57
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 8T0035223M
Audi A5 8T Sound System Audio Amplifier Amp Unit Bang & Olufsen 8T0035223M
Promo price
£569.95
£341.97
Free delivery: Mar 02
If paid before 14:00
-15%
Part no. 8K0971035BB
Audi A5 8T Front Driver Side Door Wiring Harness Cable 8K0971035BB
Promo price
£18.95
£16.11
Free delivery: Mar 02
If paid before 14:00
-40%
Part no. 4K0906121D
Audi A4 B9 A5 F5 A6 C8 Fuel Pump Control Pump Unit Module ECU 4K0906121D
Promo price
£61.95
£37.17
Free delivery: Mar 02
If paid before 14:00
Part no. 5Q0919298K
Audi A3 8V PDC Parking Distance Control Sensor Module Unit ECU 5Q0919298K
£51.95
Free delivery: Mar 02
If paid before 14:00
Part no. 03L906022NP-2
Audi A5 8T A4 B8 2.0 TDI CAHA 170HP Engine Control ECU Kit 03L906022NP Manual
£123.95
Free delivery: Mar 3 – 10
If paid before 14:00
-40%
Part no. 5WA959436N
Audi S3 8Y Keyless Control Module Unit ECU 5WA959436N
Promo price
£56.95
£34.17
Free delivery: Mar 02
If paid before 14:00
Key components of vehicle electrical systems
Original electrical parts for popular car brands
A car's electrical system is a complex system responsible for many key functions—from engine starting to lighting and on-board electronics. Modern cars are equipped with increasingly advanced electrical solutions that not only improve driving comfort but also enhance safety. At the Global Parts automotive store you will find a wide range of used car parts , such as alternators, starters, batteries, control modules and other automotive electrical systems that perfectly fit BMW , Audi , Mercedes , Volkswagen , Mini and many others.
How does a car's electrical system work?
A car's electrical system is a complex system that consists of several key components that work together to ensure the vehicle's reliable operation:
- Battery accessories – Includes clamps, cables, holders and other components necessary for battery installation and maintenance.
- Electronic control modules and controllers – They control and manage the operation of various vehicle systems, such as the engine, air conditioning and ABS.
- Alternators and generators – Responsible for generating electricity and charging the battery while the engine is running.
- Parts for alternators and generators – Including voltage regulators, brushes and bearings that ensure proper operation of the alternator.
- Starters – Key components of the starting system that enable the engine to be started.
- Starter parts – Including bendixes, rotors and solenoids necessary for the proper operation of the starter.
- Batteries – They store the electrical energy necessary to start the engine and power on-board systems.
- Wires, harnesses and connectors – They transmit energy and electrical signals between various vehicle systems.
- Fuses and fuse boxes – Protect the electrical system against overloads and short circuits.
- Relays – They control the flow of current in individual electrical circuits of the vehicle. A functioning electrical system is the basis for the reliability of your car, regardless of operating conditions.
Key technical parameters of electrical systems
Each of these components has specific technical parameters that determine its compatibility with the vehicle. For example, alternators installed in mid-range cars (e.g., Volkswagen Passat B6) typically have a capacity of 90 A to 140 A, while luxury vehicles (e.g., Mercedes S-Class) require alternators with a capacity exceeding 180 A. Starter motors vary in torque and operating voltage – the standard is 12 V, while 24 V starters are used in heavy-duty vehicles.
Why is it worth taking care of your car's electrical system?
Regular maintenance and replacement of electrical system components is key to reliability and road safety. Faulty components can lead to:
- Problems starting the engine.
- Failure of safety systems such as ABS or airbags.
- Decreased efficiency of on-board equipment, e.g. lighting or air conditioning. At the Global Parts store we offer original used car parts , which have undergone detailed quality tests, ensuring their full functionality.
Symptoms of electrical system disruptions
In practice, electrical faults manifest themselves in a variety of ways. Drivers most often notice: dimming lights when parked, difficulty starting the engine, a voltage drop on the on-board computer, or air conditioning malfunctions. The table below presents typical correlations:
| Symptom | Possible cause | Item to check |
|---|---|---|
| Difficulty starting the engine | Worn out starter or battery | Starter motor, battery |
| Dimming the lights | Inefficient alternator | Alternator, voltage regulator |
| Electric windows not working | Damaged relays or harness | Relays, wires |
How to choose the right parts for your electrical system?
When choosing parts for the electrical system, such as alternators, starters or control modules, it is worth paying attention to:
- Vehicle-specific fit – Every car make and model requires specific specifications. At Global Parts, you'll find parts that perfectly fit BMW , Audi , Mercedes , Volkswagen , Mini, and many more .
- Technical condition – All used parts we offer are thoroughly checked to ensure their reliability.
- Technical parameters – For example, alternators should have appropriate current output, adapted to the needs of your vehicle.
Compatibility and fit
The selection of electrical parts is based primarily on OEM part numbers, but matching them to specific parameters is equally important, including current, voltage, and the number of connector pins. For example, the 120A alternator used in the Audi A4 B7 differs significantly from the 150A version installed in the Audi A6 C6 . Therefore, using manufacturer catalogs or providing the VIN makes finding the right component much easier.
Why choose used electrical parts?
Purchase of used car parts This solution allows you to combine savings with quality. Why choose it?
- Lower costs – Used alternators, starters and other parts are cheaper than new ones, but offer the same high quality.
- Ecology – You support recycling and reduce waste by choosing used car parts .
- Wide range – We offer electrical parts for the most popular car brands, so you can easily find what you need.
How to take care of your car's electrical system?
To ensure your electrical system operates reliably for years, it is worth remembering a few rules:
- Regularly check the battery condition and charge level.
- Take care of your cables and connectors – corrosion or damage can lead to voltage drops and failures.
- Monitor the operation of the alternator and starter – early detection of problems will help avoid more serious breakdowns. If you have any problems, you will find the right car parts at Global Parts that will help restore your vehicle to full working order.
Step-by-step control procedures
- Measure the battery voltage with a multimeter – the resting value should be approximately 12.6 V.
- Check the charging voltage with the engine running – the correct range is 13.8–14.5 V.
- Assess the condition of the wires and terminals – lack of corrosion and a firm seat are essential.
- If in doubt, check the quiescent current consumption – it should not exceed 0.05–0.08 A.
FAQ - Frequently asked questions about electrical systems in cars
| Question | Answer |
|---|---|
| What is a car electrical system? | This is a set of components responsible for powering and controlling all electrical functions in the car – from engine starting to multimedia. |
| What is an alternator for in a car? | The alternator generates electrical current when the engine is running and charges the battery. |
| What is the difference between a starter and an alternator? | The starter motor is used solely to start the engine, while the alternator is responsible for generating energy while driving. |
| How to check if the battery is working? | Just measure its voltage – a healthy battery should have approximately 12.6 V at rest and maintain a voltage above 10 V during cranking. |
| What are the most common symptoms of car electrical failure? | Problems starting the engine, flashing warning lights, power windows not working or dimming lights. |
| Do electrical parts from one model fit another? | Sometimes yes, but the key is to match it by VIN or OEM number – this guarantees compatibility. |
| How often should you check your electrical system? | It is worth performing basic diagnostics (battery, alternator) at least once a year or before a long trip. |
Summary: Automotive electrical systems at Global Parts Automotive Store
Automotive electrical systems are the foundation of the reliability and comfort of every modern vehicle. By choosing the right parts, such as alternators, batteries, and control modules, you can ensure your car's full operational efficiency. The Global Parts automotive store invites you to browse our wide selection of original used car parts . Whether you're looking for car parts for BMW , Audi , Volkswagen , Mercedes, Mini , or others, you'll find them at competitive prices. We strive to ensure every customer finds the right parts for their car, and if you have any questions or concerns about selecting the right components, we're happy to help! Please contact us – we're here to help! For more information and interesting facts, visit our automotive blog .