What is the construction and purpose of automotive electrical systems?

Automotive electrical systems are a set of components responsible for starting, charging, powering consumers, and controlling vehicle electronics. They include, among others, the battery, alternator, starter, fuses, relays, controllers, and wiring harnesses. These components are located in different parts of the car and work together through connectors and signal buses.

What are automotive electrical systems used for?

Automotive electrical systems are used to supply energy and transmit control signals to vehicle components. Thanks to them, it is possible to start the engine, charge the battery, and operate lights, windows, air conditioning, and safety systems. A fault in one circuit can affect not only comfort but also the correct operation of other modules.

What role does the wiring harness play in a car?

The wiring harness is an organized set of wires, covers, and connectors that connects individual consumers and controllers in the vehicle. It is used to transmit power, ground, and signals between modules. Its construction depends on the body version, equipment, and mounting location, so when replacing it, you must compare the wire routing, plug type, and number of pins.

How to choose an electrical part for a specific car?

The safest way is to compare the OEM number, manufacturer number, connector type, and mounting location. It is also worth considering the engine version, year of manufacture, body type, and equipment, as the same model may have different variants of the alternator, starter, or controller. In practice, verification by VIN is very helpful.

What symptoms indicate a problem with the electrical system?

Typical signals include difficulty starting, flashing warning lights, dimming lights, unstable charging, or the failure of selected consumers. In some cases, controller errors, air conditioning malfunctions, or periodic power outages also occur. Symptoms must always be linked to a specific circuit and cooperating component.

How to take care of automotive electrical systems in daily use?

The basis is regular inspection of the battery condition, terminals, ground wires, and charging. It is also good to check the tightness of housings, the condition of harness insulation, and the cleanliness of contacts exposed to moisture. A quick reaction to the first symptoms of voltage drops or electronic errors makes it easier to avoid a major failure.

Automotive electrical systems

At 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.

More information

Make

Radio Head Unit Mercedes W207 W212 COMAND Navi CD Player Navigation A2189005607

£189.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7118854

BMW Z4 Series E85 Cable Loom Wiring Harness Rear Window Heating 7043906

£42.95

Free delivery: Aug 27

If paid before 14:00

Part no. AV6T-14A076-AB

Ford Focus Mk3 Fuse Box Relay Cover Cap Flap AV6T-14A076-AB

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7640004-9

Mini One R55 R56 Petrol N12 1.4 95HP Engine ECU Kit DME 7640004 CAS3 Key Manual

£123.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8379941

BMW X5 Series E53 Interior Roof Trim Cover Ultra Sonic Module Alarm 8379941

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8P0907115AP-2

Audi S3 8P 2.0 TFSI CDLA 265HP Engine ECU Kit Ignition + Key 8P0907115AP Manual

£308.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2059005713

Door Module Mercedes W205 Front Left N/S Door Control Module Unit A2059005713

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2229000016

Entry Module Mercedes C253 W205 W213 C238 Keyless Go Control Unit A2229000016

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2059006537

Mercedes C205 Coupe Air Bag Control Module ECU A2059006537

£66.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2075406010

Mercedes W207 Front Bumper PDC Wiring Parking Sensor Loom Harness A2075406010

£61.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2468201915

AUX Jack Port Mercedes C117 W246 W176 Wiring Loom Cable Harness A2468201915

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7809680

Engine Wiring BMW F10 F11 N57 N57S Loom Cable Harness Injector Module 7809680

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9117847

PDC Module BMW F45 X3 F25 Mini F55 F56 Parking Distance Sensor Unit 9117847

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9369635

Mini Cooper One F54 F55 F56 F60 ECU Body Domain Controller BDC Module 9369635

£80.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9263468

BMW E81 E87 E90 E91 LCI Professional CD Radio Bluetooth 9263468

£161.95

Free delivery: Aug 27

If paid before 14:00

Part no. 038907281D-2

VW Volkswagen Caddy 2K Audi A4 B9 Glow Plug Relay Unit Black Diesel 038907281D

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8R1035223A

Audi A4 B8 A5 8T Sound System Amplifier Control Module ECU 8R1035223A

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2059052110

Mercedes W205 W213 Rear PDC Parking Assist Module Control Unit A2059052110

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9499002

BMW F20 F21 F22 F30 F31 F32 F36 Fuse Box Body Control Unit Module REM V2 9499002

£66.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6868873

Suspension Control Module BMW X5 F15 F20 F30 VDC Unit 6868873

£51.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2711535891

Mercedes CL203 CLC180K 143HP Engine Control ECU Kit A2661538979 + Key Automatic

£142.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9151864-1

HiFi Speaker BMW X5 E70 X6 E71 X3 E83 Top HiFi Sound Unit Door Card 6949734

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9284282

BMW F10 Body Control Module ECU Junction Box PL6 JBBFE III V2 9284282

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. rhd-A2124403852

Alternator Cable Mercedes W212 OM651 Battery Prefuse Box A2124403852

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9261614-2

PDC Sensor BMW F20 F21 F22 Rear Bumper Ultrasonic Glacier Silver SET x4 9261614

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. A0025428019-3

Relay Mercedes W176 W246 4-Pin Black Hella 12V Electrical A0025428019 Set x4

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. AH22-19C166-AA

Land Rover Discovery 4 L319 USB iPod Port Socket AH22-19C166-AA

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. rhd-A1775404103

Seat Wiring Mercedes C118 W177 W247 Passenger Side Cable Loom A1775404103

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8T2035186C

Audi A4 B8 A5 8T Radio Media Player Audio CD Head Unit Player Concert 8T2035186C

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7589971-9

Mini Cooper R55 R56 N12 1.6 120HP ECU Kit DME CAS3 + Key 7589971 Manual

£94.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8621020

BMW G20 G30 G11 G12 HV Accumulator Battery Positive Cable Wiring Plug 8621020

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2195406207

PDC Wiring Mercedes W211 W219 Front Bumper Parking Sensor Loom Cable A2195406207

£66.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7330822

BMW F01 F02 F10 LCI G30 Front Seat Support Trim Cover Ivory White 7317453

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9810061

Mini Paceman R61 Cable Door Rear Left Right N/O/S Wiring Harness 9810061

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8T0907441D

AUDI A4 B8 Reversing Camera Control Module Rear View Unit ECU 8T0907441D

£113.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7111904

BMW X5 E53 Front Driver Seat Memory Electric Wiring Loom Harness 7111904

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2185405905

Mercedes CL C218 X218 Wiring Loom PDC Harness Parking Sensor Front A2185405905

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9270356

Fuse Box BMW F40 Mini F55 F56 Power Distribution Junction Relay Unit 9270356

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6823595

BMW F25 Xenon Headlight Ballast Control Unit Module 6823595

£89.95

Free delivery: Aug 27

If paid before 14:00

Part no. A9065460643

Mercedes Sprinter W906 Fuse Box Relay Bracket Monunt Holder A9065460643

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 3A0972695

VW Volkwagen Audi Seat Skoda Cable Loom Wiring Connector Plug Socket 3A0972695

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8621018

BMW G20 G21 G30 G31 LCI G11 G12 Cell Module Connector Harness Loom Cable 8621018

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2439008400

Mercedes GLC X253 Sound Audio Amplifier Module Rear Harman A2439008400

£47.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7792544

Mini One D Diesel W17 1ND 88HP Engine ECU Control Unit DDE 7792544 Manual

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. C1BT-14B321-FF

Ford Fiesta Mk7 3Dr Air Module ECU Control Unit C1BT-14B321-FF

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 5Q4959393B

Skoda Octavia 5E Front Door Control Module Unit Driver's Side 5Q4959393B

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8E0907279L

Audi A4 B7 On Board Fuse Box BCM Body Comfort Control Module ECU Unit 8E0907279L

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6903194

Bmw E46 Battery Negative Boot Cable Negative Earth 6903194

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. RHD-5K4971121CM

Volkswagen Golf MK6 5D Door Wiring Loom Harness Front Passenger Side 5K4971121CM

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1779027906

Mercedes W177 Air Module System Control Unit Module Controller ECU A1779027906

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7M0951253C

Volkswagen T5 Audi Seat Skoda Relay Black Control Unit 5 Pin 12V 7M0951253C

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8650793

BMW G11 G12 G20 HV Accumulator Battery Negative Ground Cable Wiring Plug 8650793

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8513184-1

BMW X3 F25 20dX Diesel N47N 184HP Engine Module ECU Kit DDE 8513184 Key CAS4

£189.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9350678

Mini Cooper One F54 F55 F56 F60 ECU Body Domain Controller BDC Module 9350678

£94.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6976157

BMW E60 E61 Driver's Side Door Air Module Control Unit Module 6976157

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1775401910

Mercedes W177 Door Wiring Rear Door Left N/S Module Harness Cables A1775401910

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8P0907115AP-3

Audi S3 8P 2.0 TFSI CDLA 265HP Engine ECU Kit BCM Module Key 8P0907115AP Manual

£284.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2048853637

Mercedes W204 Front Crash Bar Impact Absorber Foam A2048853637

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9115107

BMW X5 Series E70 E70N LCI Wiring Set Wash Water Container Cable Loom 9115107

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8510284

Engine Wiring Loom BMW F30 F31 F32 330d 430d N57N Gearbox Module Harness 8510284

£42.95

Free delivery: Aug 27

If paid before 14:00

Part no. 1J0035505A

Volkswagen Polo 6N Aerial Roof Antenna Base Antenna Unit 1J0035505A

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9359799

BMW i3 I01 F10 F20 F30 LCI KaFAS Camera Speed Control ECU Module Unit 9359799

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1779008803

Mercedes W177 Door Control Module ECU Front Right O/S A1779008803

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9198760

BMW Mini Clubman R55 Cable Wiring Loom Splitdoor Door Rear Right O/S 9198760

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4A0959981A

Audi A3 S3 8L Central Locking Control Unit Module 4A0959981A

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2215450801

Mercedes W221 Fuse Box Control Unit SAM Module Relay A2215450801

£189.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6924519-2

BMW E82 E88 Rear Lamp Taillight Tail Light Wiring Cable Left N/S 6984754

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8R0915181C

Audi Q5 8R Negative Battery Terminal Cable Wiring Battery 8R0915181C

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A6519003403-3

Mercedes Sprinter W906 OM651.955 163HP Engine Unit Module ECU A6519003403 Manual

£189.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8E0054635D

Audi A3 8P TT 8J PDC Parking Distance Control Unit Module 8E0054635D

£56.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9356156

External Ignition Base BMW F20 F30 F32 F33 Power Terminal Distribution 9356156

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7199819

Roof Module BMW Z4 E85 Roadster Cabrio Convertible Folding Top 7199819

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. A6421507100

Mercedes W164 ML350 OM642 4-Matic 224HP Engine Control ECU A6421507100 Automatic

£123.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. 9387163

BMW X3 F25 Footwell Light Control Unit Module ECU FRM III TEMIC 9387163

£42.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8V4971693F

Audi A3 8V Rear Left Right N/O/S Door Card Wiring Loom Harness 8V4971693

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8K0907289C

Audi A5 8T BCM Body Comfort Convenience Module Unit ECU 8K0907289C

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. RHD-8R2035186G

Audi A5 8F Radio Stereo CD Player Reader Head Unit MMI Multimedia 8R2035186G

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1679001320

Ignition Module Mercedes V177 Electronic Ignition Switch Keyless Control Unit

£56.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9809590

Mini Countryman R60 Fuse Distribution Box PL3 SPEG H7 DC/DC 9809590

£208.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7M0951253C-2

VW Touareg 7L Audi Q7 4L Relay Black Control Unit 5 Pin 404 12V Set 7M0951253C

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1715408909

Mercedes R171 Rain Light Sensor Wiring Harness Cable A1715408909

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7512967

Mini Cooper R50 R52 R53 Base B+ Terminal Point Engine Compartment 7512967

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2479001306

Mercedes W177 W247 SAM Module Body Comfort Control Unit A2479001306

£94.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6949226

BMW E63 E64 Convertible Coupe DWA Alarm System Module Control Unit 6949226

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2195406007

Mercedes CLS W219 PDC Wiring Rear Bumper Parking Sensor Loom Cable A2195406007

£47.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7594483-5

BMW Z4 E89 2.3i N52N 258HP N52 Engine Control Unit ECU Kit DME 7594483 Manual

£208.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9272371

Radio Player BMW F20 F21 F30 F31 Alpine CD DAB Head Unit Audio Player 9272371

£75.95

Free delivery: Aug 27

If paid before 14:00

Part no. 5WA959655L

Volkswagen VW Golf Mk8 Air Module Control Unit ECU Module 5WA959655L

£142.95

Free delivery: Aug 27

If paid before 14:00

Part no. WR09-C01-AA

Land Rover Discovery L550 Sunroof Sliding Roof Drive Motor Actuator WR09-C01-AA

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. rhd-A2115400824

Fuse Box Housing Mercedes W211 CLS C219 Holder Mount Bracket A2115400824

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8656997

BMW X5 F15 X6 F16 Ground Cable Negative Battery Lead Wire 8656997

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9282286

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 MID 9282286

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2049060205-1

Mercedes C204 Rear SAM Module Fuse Box Relay Control Unit A2049060205

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9231283-BS

BMW X5 E70 F10 PDC Parking Sensor Distance Control Sensor Black Sapphire - 475

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1695406945

Mercedes SLK R171 Gateway Control Unit Gateway Module ECU A1715405145

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9258350-1

Control Unit BMW F20 F21 F22 F30 F31 F32 Control Unit Airbag ECU Module 9258350

Product currently unavailable

Part no. VP7EKX-13K198-AB

Ford Fiesta MK7 Front Headlight Adjustment Motor Range Control VP7EKX-13K198-AB

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4G8959795A

Audi A7 4G8 Door Control Module Electrical Unit ECU Rear Right O/S 4G8959795A

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8E5035223C

Audi A4 B7 Sound Stereo Bose Amplifier 8E5035223C

£47.95

Free delivery: Aug 27

If paid before 14:00

...

Showing 3763-3861 of 27659 products