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.

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Mercedes W176 W246 Gearbox Transfer Case Control Module Unit ECU A2469008115

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2G0907357A

VW Polo Mk6 AW Headlight Head Lamp Range Control Unit Module ECU 2G0907357A

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7N0907530M

Seat Leon Mk2 1P Central Gateway Control Unit Module Relay ECU 7N0907530M

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. EXHAUST-FLAP-CONTROL

Audi A3 8V 1.6 TDI CLHA Drive Exhaust Flap Control Module Unit Actuator

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6916565

BMW 5 X5 Series E38 E39 E53 Hands-free Electronics Charging Module MOTOROLA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8055326

BMW F80 M3 F82 M4 F83 M4 LCI Fuel Tank Heat Insulation Plate 8055326

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7621178-5

BMW E81 E87 LCI E90 N43 118i 318i Engine Control ECU DME Kit 7621178 Automatic

€375.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8682893

BMW F20 F30 LCI 120i 320i 330i B48 Engine Wiring Cable Loom Harness 8644504

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1715420123

PDC Display Mercedes W169 W211 Parking Distance Sensor Control Unit A1715420123

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0971687AG

Audi A4 B8 Door Harness Loom Cable Wire Rear Left N/S 8K0971687AG

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A4539009506

Smart Fortwo C453 Sat Nav Control Unit Navigation Module Unit A4539009506

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0959592D

Door Module Audi A3 8V VW Golf 7 Seat Leon 3 Front Right O/S 5Q0959592D

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9146651

BMW X5 X6 E70 E71 Board Monitor Sat Nav System Screen 8,8" 9146651

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DV6T14B531BD

Ford Transit Connect Door Module Front Right O/S Control Unit ECU DV6T14B531BD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8F0971035H

Audi A5 8F Cabriolet Door Card Wiring Harness Front Driver's Side 8F0971035H

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DH22-14B192-DA

Land Rover Discovery Sport L550 Relay 5-Pin Unit 12V 40A Black DH22-14B192-DA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CPLA-17D547-AD

Range Rover Evoque L538 Rain Sensor Module Control Unit CPLA-17D547-AD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9345374

BMW F10 LCI Light Control Footwell Module ECU Unit FRM3 9345374

€70.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5638SC

Peugeot 308 T7 Negative Battery Connector Cable Wiring Harness 5638SC

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BJ32-14D374-AC

Range Rover Evoque L538 Air Module Control Unit ECU BJ32-14D374-AC

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V4971036M

Audi A3 8V Door Trim Harness Wiring Wire Front Passenger Side 8V4971036M

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5E6971104G

Skoda Octavia Mk4 NX Rear Bumper PDC Wiring Loom Harness 5E6971104G

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. FH22-14B006-AA

Land Rover Discovery L319 Air Module Crash Impact Sensor FH22-14B006-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 079903805J

Audi A4 B6 B7 4.2 V8 FSI Alternator Bracket Mount Holder 079903805J

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6511590246

Wiring Cable Cover Mercedes W204 W212 W906 OM651 Engine Duct Bracket A6511590246

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L906018JM-2

Audi Q5 8R 2.0 TDI CGLC Quattro 177HP Engine ECU Kit Lock Key 03L906018JM Manual

€208.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1779008511

Door Module Mercedes W177 W247 Rear Left Right N/O/S Control Unit A1779008511

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2469055003-1

Ignition Switch Mercedes W167 W177 W247 Lock Control Unit Module A2469055003

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2229006007

Mercedes w205 SAM Comfort Control Module Unit A2229006007

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9288304

FEM Module BMW F20 F21 F22 F30 F31 F32 F36 Control Unit 9288304

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9843912180

Peugeot 3008 Crash Impact Sensor Control Unit 9843912180

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8514293

BMW F15 Alternator Starter Motor Battery Cable Wiire Harness Loom B+ 8514293

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8591075

BMW X5 F15 Engine Control Unit 231HP ECU Kit Automatic Gearbox 25dX B47 8591075

€759.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9251722

BMW F20 Front Left Door N/S Wiring Loom Harness Cables 9251715

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6C1T14A067AB-1

Ford Transit Mk7 Fuse Box Relay With Bracket Holder 2.2 Diesel 6C1T-14C445-AB

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7M0951253C-1

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

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6949229

Mini R52 Cabrio Convertible DWA Rear Door Alarm System Module Unit 6949229

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CS7T-19C128-AF

Ford Galaxy Mk3 S-Max Mondeo Mk4 Sat Nav Control Module Amplifier CS7T-19C128-AF

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2Q0971537AN

Volkswagen Polo Mk6 AW Battery Negative Cable Wiring Earth Line 2Q0971537AN

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2K2945095E-2

VW Volkswagen Caddy 2K Rear Tail Light Lamp Wiring Cable Left N/S 2K2945095E

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5M5T-14B192-AA

Land Rover Jaguar Ford 4-Pin Multi Use Black Relay 20A 5M5T-14B192-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BJ32-14D455-AD

Land Rover Range Rover Evoque L538 Blind Spot Sensor Module ECU BJ32-14D455-AD

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GN15-14C676-AA

Volkswagen Amarok MK2 Impact Sensor Front Left Right N/O/S Door GN15-14C676-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2056105402

Mercedes W205 Battery Recess Trunk Floor Battery Box Base Plate A2056105402

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6976156

BMW E60 E61 E63 Passenger Side Door Air Control Module 6976156

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0959792H

Door Control Module Audi S4 A4 B8 A5 8T Front Right O/S Passenger 8K0959792H

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7304589

BMW F01 F02 Headlight Module LEAR TMS Headlamp Control Unit Module 7304589

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9897879-4

Mini Cooper F55 F56 F60 B38C 1.5 136HP Engine Module ECU DME 9897879 Manual

€118.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 02M911021A

VW Volkswagen Crafter SY Transporter T6 SEG Bosch Starter Motor 02M911021A

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9352861

FEM Unit BMW F20 F22 F30 F32 Control Unit Module ECU Fuse Box 9352861

€142.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9237968

BMW F07 GT Central Gateway Module ECU Control Unit Lear ZGW-01 High 9237968

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9384100

Mini F54 Clubman F60 Countryman KaFAS Camera Windscreen Unit Front 9384100

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7616200-1

Negative Battery Cable BMW E90 E91 E92 E93 Minus Pole IBS 7616200

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6229000700

Mercedes W447 Bosch Glow Plug Relay Controller Unit Control Module A6229000700

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 04E906027CL

VW Golf Mk7 Audi Q3 8U 1.4TSI CHPB 150HP Engine Unit ECU 04E906027CL Automatic

€218.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8510137-3

BMW F10 F11 520d N47N 184HP Engine Control Module ECU DDE 8513242 Manual

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6461532491-2

Mercedes Vito W639 OM646.982 150HP Engine Module ECU Kit A6461532491 Automatic

€455.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2128204585

Mercedes-Benz A B W176 W246 Glove Box Aerial Antenna Booster Amplifier

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DAN1110

Range Rover Sport L405 Alternator 4.4 SDV8 Diesel Denso DAN1110

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8516739-3

Mini Cooper D R55 R56 LCI R60 N47N Engine ECU Kit DDE 8516739 CAS3 Key Automatic

€142.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 05L907309-3

Audi A4 B9 A5 F5 2.0 TDI DEZB 136HP Engine Control ECU 05L907309 Automatic

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9125224

BMW 1 3 SERIES E87 E90 E91 Control Unit Airbag ECU NO CRASH DATA 9125224

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K0906093H

Seat Ibiza 6J 1.2 TSI Petrol Fuel Pump Control Unit Relay 1K0906093H

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P5907553AG

Porsche Cayenne 92A Suspension Control Module Unit ECU 7P5907553AG

€246.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6G9N-R6K034-DF

Ford Mondeo Mk4 Battery Tray Bracket Mount Holder Support Carrier 6G9N-R6K034-DF

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0959792E

Audi A4 B8 A5 8T Front Door Module Control Unit Module ECU Left N/S 8K0959792E

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9249404

BMW E81 E87 E90 E91 LCI E92 E93 CD Radio Business Unit 9249404

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8570931

BMW F10 F20 F30 F32 Engine ECU Control Module Unit 184HP N47N Manual 8570931

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7T1T-14073-BB

Ford Transit Connect Mk1 Fuse Box Relay Control Module Unit 7T1T-14073-BB

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9242523

BMW X5 E70 Footwell Light Control Module Unit 9242523

€175.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6949228

Mini Cooper R52 Cabrio Convertible DWA Door Alarm System Module Unit 6949228

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A4475408347

Mercedes Vito W447 OM622 Engine Starter Wiring Harness A4475408347

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8P0959655P

Audi A3 8P Air Module Control Unit ECU Module 8P0959655P

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6933268

BMW 7 Series E65 E66 Control Unit Door Rear Passenger Side 6933268

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9264974

BMW E81 E82 E87 E88 E90 E91 Front Seat Control Module 9264974

€85.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 06K907425B-15

Audi S3 8V 2.0 TFSI DJHA 310HP Quattro Engine Unit ECU Kit 06K907425B Automatic

€360.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6826983

BMW F20 F21 F30 F31 Air Module Control Unit ECU Controller 6826983 0 285 013 626

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. F1B1-12A650-AJB

Ford Fiesta Mk7 1.0 EcoBoost 140HP Engine Control Unit ECU F1B1-12A650-AJB

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5M5T14B192AA-1

Ford Transit Custom Mk8 Relay 4-Pin Black 12V 20A SET X2 5M5T-14B192-AA

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2045452647

Mercedes W204 Aerial Antenna Control Unit Bracket Holder Mount A2045452647

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2079010600

Rain Sensor Mercedes W204 W212 Light Solar Condensation Control Unit A2079010600

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AV1T-14A584-DDD

Ford B-Max Mk1 Front Door Loom Wiring Harness Cable Left N/S AV1T-14A584-DDD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8617551-5

BMW F20 F21 125i N20 218HP ECU Control Unit Kit DDE 8617551 Key FEM Automatic

€474.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CK52-14C676-AA

Range Rover L405 Sensor Air Module Impact Crash Sensor CK52-14C676-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2045401307

Mercedes W204 Centre Console Lightning Dashboard Cable Wiring A2045401307

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0971030AD

Audi A4 B8 Door Wiring Harness Cable Loom Front Passenger Side 8K0971030AD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L906018KP

Audi TT 8J CFGB 2.0 TDI Quattro 170HP Engine ECU Kit 03L906018KP Automatic

€146.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9302356

Battery Cable BMW F10 F11 X3 F25 Lead Negative IBS Wiring 9302356

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5H0907159D

Volkswagen Golf Mk8 GTI Impact Sound Control Unit Module 5H0907159D

€85.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9367700

BMW X6 F16 PDC Bumper Park Assist Wiring Harness Loom 9367700

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2229005315

Bluetooth Module Mercedes W176 W205 Multimedia Control Unit ECU A2229005315

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2469008819

Radio Head Unit Mercedes W176 W246 Audio 20 Media Player Navigation A2469008819

€265.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7N0907441

Volkswagen Sharan Seat Alhambra Reverse Camera Module Control Unit 7N0907441

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1669003602

Mercedes W204 R172 DAB Receiver Digital Audio Control Unit Module A1669003602

€89.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129005212

Radio Head Unit Mercedes W212 COMAND Navi CD DVD Player Navigation A2129005212

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7551111

Mini R52 R53 R55 R56 R57 R60 Automatic Transmission Cable Wiring Harness 7551111

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4L0971384K

Audi Q7 4L Seat Frame Wiring Harness Loom Wire Front Right O/S 4L0971384K

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. SOUNDSTAGE-SUBWOOFER

Soundstage Car Audio BA Series Enclosure Subwoofer Speaker Amplifier Box 600W

€341.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7N5035680E

Seat Alhambra 7N Radio Navigation Head Unit Multifunction Display 7N5035680E

€526.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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