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

Find it faster

Match to your vehicle

Make

BMW 3 5 6 Series E60 M5 E64 M6 E90 E93 M3 Accelerating Sensor

£24.95

Part no. 9142218

BMW X3 E83 LCI PDC Parking Ultrasonic Sensor Silver Grey 9142218 9139866

£13.95

Part no. 9168336

BMW X1 E84 Diversity Aerial Antenna Amplifier DAB 9168336

£18.95

Part no. 7801712

BMW E60 E61 E90 E91 330d 530d M57N2 Engine DDE Control Unit 7801712 Automatic

£142.95

Part no. rhd-A2115400582

Fuse Box Cover Mercedes W211 C219 SAM Control Module Cap Lid Housing A2115400582

£18.95

Part no. 4G0907355G

Audi A7 4G8 3.0 TDI CZVA Adblue Control Module Unit ECU 4G0907355G

£13.95

Part no. 7520019

Mini Cooper One R50 Petrol W10 W11 Engine Control Unit DME 7520019 Automatic

£13.95

Part no. 9127088

BMW E81 E90 DC/DC Torque Converter Module Wandler 9253208 9127088

£13.95

Part no. 6970675

BMW X5 E70 Front Bumper PDC Wiring Loom Cable Harness 6970675

£47.95

Part no. A2049009501

Fuse Box Mercedes W204 Rear SAM Relay Control Unit Module A2049009501

£237.95

Part no. A0009822723

Mercedes W205 Estate Fuse Relay Box Module Control A0009822723

£13.95

Part no. A2129006518

Door Module Mercedes W204 W207 W212 Front Right O/S Control Unit A2129006518

£23.95

Part no. 8P0919475M

Audi A3 8P PDC Parking Assistance Distance Control Module Unit ECU 8P0919475M

£13.95

Part no. A1718300272

Mercedes A B ML Class W166 W169 W245 Interior Temperature Sensor A1718300272

£13.95

Part no. RHD-8R2035666F

Audi A4 B8 Multimedia Stereo Sat Nav SD CD Player Radio Head Unit 8R2035666F

£85.95

Part no. 9805670-1

Mini R60 Countryman Window Lifter Motor Drive Front Right O/S Door 9804384

£13.95

Part no. 8X0907357C

Audi TT 8J Headlight Head Light Lamp Range Control Unit Module ECU 8X0907357C

£13.95

Part no. 9247472

BMW E87 LCI ECU Body Control Module Junction Box H2 PL2RR 9247472

£13.95

Part no. RHD-7549246

BMW 1 3 Series E87 E90 116i 316i Engine Wiring Loom Harness 7545163 7549246

£13.95

Part no. R50-PARK-LANE

Mini R50 Park Lane Sticker Rear Window Decals Plates Set

£13.95

Part no. 3412531

BMW X3 E83 Light Lamp Switch Wiring Wire Cable Plug 3405795

£13.95

Part no. 9252637

BMW X1 E84 Parking Control Module Unit PDC ECU 9252637

£56.95

Part no. 8510591-3

BMW E81 E87 E90 LCI 120d 320d N47 ECU Kit DDE 8510591 CAS3 + Key Automatic

£199.95

Part no. 8K0907064DP

Audi A4 B8 Body Control Module BCM Comfort Control Unit 8K0907064DP

£13.95

Part no. 9215184

BMW E60 E87 E90 E91 Hands Free Electronics Charging Module MULF2 9215184

£18.95

Part no. 9293309

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9293309

£13.95

Part no. A2128203985

Mercedes W204 W212 Door Module Rear Left N/S Control Unit Module A2128203985

£13.95

Part no. 9343766

BMW 3 4 Series F30 F31 F32 Top Hifi Audio Sound Amplifier Harman Kardon 9343766

£664.95

Part no. 9226331

BMW E87 LCI ECU Body Control Module Unit H2 9226331

£18.95

Part no. 9247159

BMW F01 F02 LCI F07 GT Control Unit Module Voltage Transformer VSU400 9247159

£56.95

Part no. 9227752

BMW F20 F21 F22 F23 F30 F80 M3 F82 F36 Distributor B Multifuse 9227752

£13.95

Part no. 8R0907468N

Audi A5 8T Gateway Control Module Unit ECU 8R0907468N

£13.95

Part no. 9258350

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

£18.95

Part no. A2059008618

Mercedes W205 Module SRS Control Module Unit A2059008618

£13.95

Part no. 9381445

Mini Cooper F55 F56 F57 IBS Negative Battery Lead Cable 9381445

£13.95

Part no. 9389657

BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9389657

£18.95

Part no. A0035420819

Mercedes W176 W205 W213 W242 W447 W907 Relay 4-Pin Black Tyco Unit A0035420819

£13.95

Part no. A0009820112

Mercedes W177 W207 Power Energy Distribution Unit Module A0009820112

£13.95

Part no. A1645453316

Mercedes ML W164 Parktronic Parking Control Unit Module A1645453316

£28.95

Part no. 8509722-1

Control Unit Box BMW F20 F21 F22 F30 F31 Engine Ecu Cover 8509722

£13.95

Part no. 9302256

BMW F10 F20 F30 Reversing Camera ECU Control Unit Module 9302256

£37.95

Part no. 7544721

BMW X5 E53 Automatic Gearbox Basic Control Unit Module EGS 7544721

£13.95

Part no. 7624412

BMW 1 3 Series F20 F21 F30 Cable Alternator Starter Base B Wire 7624412

£13.95

Part no. A6399003000

Door Module Mercedes Vito W639 Front Right O/S Control Unit ECU A6399003000

£47.95

Part no. 7608801

Valve Cable BMW F20 F21 F30 F31 Petrol N13 Valve Tronic Wiring Harness 7608801

£13.95

Part no. 8625072

Wiring Loom Mini Cooper F55 F56 Harness Injection Valve Ignition 8625072

£18.95

Part no. 9130047

BMW E92 F32 E61 LCPA Seat Belt Module ECU

£13.95

Part no. A9065450003

Fuse Cover Mercedes Sprinter W906 Box Trim Panel Lid Grey A6395450003

£13.95

Part no. 9361145

Mini Cooper One R55 R56 R57 LCI R58 R59 CHAMP 2 Navigation 9361145

£75.95

Part no. A2048204697

Mercedes W204 Dashboard Dash Navigation Central Display Screen Monitor

£113.95

Part no. 9134707

BMW X5 E60 E61 E63 E64 E70 Control Unit Module Passive Go 9134707

£13.95

Part no. 9113064

BMW 5 Series E60 E61 LCI Centre Console Switch Cluster Control Unit ECU 9113064

£13.95

Part no. RHD-6974666

BMW E84 E90 E91 Instrument Cluster Speedo Clocks Automatic 6974666

£28.95

Part no. rhd-A2075400340

Battery Fuse Box Mercedes W204 Control Unit Module SAM A2075400340

£18.95

Part no. 8636064

Wiring Cable BMW F20 F30 LCI B48 Engine Injector Ignition Loom 8636064

£66.95

Part no. A2048210851

Mercedes W212 Windscreen Rain Sensor Temperature Humidity Unit A2048210851

£13.95

Part no. A0055461240

Mercedes W169 W245 Distributor Box Front Control Unit Module A0055461240

£13.95

Part no. 9348728

BMW F22 F30 LCI Control Unit Airbag ECU NO CRASH DATA 9348728

£47.95

Part no. 7574294

Mini Cooper S R56 Automatic Gearbox TCU ECU Control Unit EGS Module 7574294

£28.95

Part no. 9170452

BMW X5 Series E70 Footwell Light Control Module Unit LEAR FRM II NSW 9170452

£113.95

Part no. 4F0959793E

VW Volkswagen Tiguan 5N Front Right O/S Door ECU Module Control Unit 4F0959793E

£13.95

Part no. A2128203485

Door Module Mercedes W204 W212 Front Left N/S Control Unit Module A2128203485

£13.95

Part no. 8P0907063G

Audi A3 8P Body Control Module Unit 8P0907063G

£13.95

Part no. 8734748

Telematics Control Unit BMW F20 F31 LCI F32 Module ATM ECE 4G WLAN 8734748

£28.95

Part no. A2049057501

Mercedes W204 W212 Dashboard Light Sun Solar Sensor Unit A2049057501

£13.95

Part no. 6929347-1

BMW 1 3 SERIES E82 E90 E92 Roof Antenna Aerial Shark Fin GPS Radio TeL 1682646

£13.95

Part no. 5Q0919294K

Audi RS3 8V PDC Parking Distance Control Sensor Module Unit ECU 5Q0919294K

£13.95

Part no. 7515206

Mini Cooper One R50 R52 Battery Alternator Starter Cable Wiring 7515206

£13.95

Part no. A2188200187

Mercedes W221 Multimedia Interface USB Adapter Port Socket A2188200187

£18.95

Part no. A2129018508

Mercedes W212 Air Bag Control Unit ECU AirBag Sensor Module A2129011105

£23.95

Part no. 9261599

BMW F20 F21 F22 Rear Bumper PDC Ultrasonic Sensor Estoril Blue 2

£13.95

Part no. 9222861

BMW 1 3 Series E87 E90 LCI CIC Sat NAV Screen Navigation Professional 9222861

£237.95

Part no. 8X0959792H

Audi Q3 8U Door Module Front Door Left N/S Control Module 8X0959792H

£13.95

Part no. 9355549

BMW F20 F22 F21 F30 F32 LCI ECU USB Hub Module 9355549

£13.95

Part no. rhd-A2479007004

Mercedes W177 Dash Monitor Display Speedo Meter SAT NAV Screen A2479007004

£104.95

Part no. 9381114

BMW F20 F21 F30 F31 F32 Mini F56 F57 Seat Control Unit Module Heating 9381114

£18.95

Part no. 8F0959255

Audi A5 8F Convertible Folding Roof Module Control Unit 8F0959255

£118.95

Part no. A1698206626

Mercedes W169 W245 Airbag System Control Unit Module ECU A1698206626

£13.95

Part no. 9217004

Battery Cable Plus BMW X5 E70 E70N LCI X6 E71 Positive Pole 9217004

£13.95

Part no. 9343317

Audio Amplifier BMW F20 F21 F22 Harman/Kardon Active Sound Design System 9343317

£47.95

Part no. 2622869

BMW F20 F21 LCI Mini F55 F56 Top Hifi Audio Amplifier Harman Kardon 2622869

£246.95

Part no. H1BB13D278AC

Ford Fiesta MK7 Front Headlamp DRL Light Lamp Control Unit Module H1BB-13D278-AC

£18.95

Part no. 9134661

BMW E87 E90 E91 E92 Seat Control Unit Module ECU 9134661

£18.95

Part no. 9267514

BMW F10 F11 F12 Central Gateway Module ECU Control Unit Lear ZGW-02 High 9267514

£37.95

Part no. 6975688

BMW E64 Gateway Module Sensor Air Module Control ECU 6975688

£142.95

Part no. 6915327-1

BMW E46 E60 E81 E87 E90 E91 F10 F20 F30 2x Relay Make Contact Sky Blue 6915327

£13.95

Part no. 9264568

BMW E92 LCI Body Control Module Unit PL2RR JBBFE IIIR L1 9264568

£13.95

Part no. 9383069

Head Unit BMW F10 F20 F22 F30 Navigation Sat Nav High Control Module 9383069

£113.95

Part no. A2038270642

Mercedes-Benz CLC-Class CL203 Antenna Amplifier Rear Right O/S A2038270642

£13.95

Part no. 7627021

BMW 1 3 Series F20 F21 F30 Petrol N13 Harness Engine Sensors Module 1 7627021

£28.95

Part no. 9294199

BMW F20 F21 F22 F30 F31 Alpine CD Champ 2 Radio Player Head Unit 9294199

£18.95

Part no. 5Q4959592E

Seat Leon Mk3 Door Module Control Unit Front Passenger's Side Door 5Q4959592E

£13.95

Part no. 6914304

Mini Cooper One R50 R52 Cabrio R53 Side Air Module Impact Sensor 6914304

£13.95

Part no. 7579142-13

BMW 1 3 Series E87 LCI E90 120i 320i Petrol ECU Kit N43 DME 7579142 CAS3 Key

£113.95

Part no. 9275509

BMW F07 F25 CIC Sat Nav Professional Infotainment Radio Player Head Unit 9275509

£208.95

Part no. rhd-7570540

BMW 1 3 E87 LCI E90 Petrol N43 Wiring Loom Harness Manual Gearbox 7570540

£13.95

Part no. 6886185

BMW F20 F21 F30 F31 ICM Module Air Module Control Unit ECU 6886185 0265020864

£13.95

Part no. 9236520

BMW X1 E84 Front Bumper Loom Cable Harness Parking Sensors PDC Wiring 9191449

£28.95

Part no. 6911024

BMW Z4 E85 E86 Battery Mounting Bracket Part Holder 6911024

£13.95

...

Showing 892-990 of 30307 products