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 W204 Front Door Electrical Cable Wiring Loom A2045402210

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6C0907159A

Volkswagen Polo Impact Sound Control Module Unit 6C0907159A

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L907309N-2

Volkswagen Passat B7 Engine Control Unit ECU 140HP CFFB 2.0 TDi 03L907309N SET

€180.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1645400641

Mercedes-Benz M-Class W164 Battery Ground Earth Strap Cable Wiring A1645400641

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6956020-2

Mini Cooper One Convertible R52 Rear Bumper PDC Wiring Parking Sensor Loom Cable

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0907064DB

Audi A8 D4 BCM Body Comfort Convenience Module Unit ECU 4H0907064DB

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P5035225C

Porsche Cayenne 92A Aerial Antenna Amplifier Lid Left N/S 7P5035225C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2191045

Ford Transit Connect Glow Plug Wiring Loom Cable Wire 1.5 TDCi Diesel 2191045

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. M8D2-14A073-AA

Land Range Rover Evoque L551 L550 Fuse Box Relay Box Module Unit M8D2-14A073-AA

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. NNW004050

Land Rover Discovery 2 L318 2.5 Diesel 138HP Engine Unit ECU NNN000120 Manual

€450.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 99161818510

Porsche 718 Boxster 982 Parking Aid Control Unit Module 99161818510

€237.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2479007312

Mercedes W212 Suspension Module Adjustment Control Unit Controller A2479007312

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F5035225AJ

Audi A6 C6 Aerial Antenna Amplifier Right O/S FM Booster Unit 4F5035225AJ

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9315080

BMW X3 F25 Window Lifter Switch Driver's Side Wiring Harness Loom Cable 9315080

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 99761817112

Porsche Cayman 987C Immobilizer Alarm Control Module Unit 99761817112

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0971036B

Audi RS4 B8 Door Wiring Harness Cable Loom Front Right O/S 8K0971036B

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2048200164-2

Mercedes W204 Rear Tail Light Wiring Loom Harness Plug Left N/S A2048200164

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055401410

Mercedes S205 C253 Rear Door Harness Wiring Cable Left Right N/O/S A2055401410

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8X0971036N

Audi A1 8X Door Wiring Harness Cable Loom Front Passenger Side N/S 8X0971036M

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0971035L

Audi A4 B8 Door Wiring Wire Harness Loom Cable Front Driver Side 8K0971035L

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR062205

Land Rover Discovery 4 L319 Front Bumper PDC Wiring Harness Loom FH22-14369-CB

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0035188E

Audi A4 B9 A5 F5 MMI Navigation Radio Head Unit Multimedia 8W0035188E

€203.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0927165C

Seat Leon Mk3 VW Golf Mk7 Audi A3 8V Fuse Box Insert Cover Trim Plate 5Q0927165C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FH22-18D493-AA

Land Rover Discovery 4 L319 Heated Seat Control Module ECU FH22-18D493-AA

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9181454

BMW X1 E84 Aerial Antenna Noise Suppression Filter 9181454

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FH22-14B006-BB

Range Rover Sport L494 Air Crash Impact Sensor Left Right N/O/S FH22-14B006-BB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6821407

High Voltage Cable BMW F45 Mini F60 Hybrid Harnes EDH 6821407

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CK52-14A067-BB-2

Range Rover Vogue L405 Fuse Relay Box Electrical Unit CK52-14A067-BB

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8E1971035EL

Audi A4 B7 Door Wiring Harness Loom Cable Front Driver's Side 8E1971035EL

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009951033

Mercedes W204 Exhaust Pipe Connector Clamp Holder M274 Petrol A0009951033

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. K8D2-14A076-BC

Land Range Rover Sport L320 Fuse Relay Box Cover Lid Panel K8D2-14A076-BC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2025402373-2

Mercedes W169 W203 W211 2 OBD Diagnostic Plug Cover A2025402373

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2479009312

Mercedes W910 Telematics Module Communication Blutooth Control A2479009312

€80.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2124405433

Mercedes W212 Wiring Harness Right Front Door Control Unit Right O/S A2124405433

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2195406207

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

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR143878

Land Rover Range Rover Evoque L551 Battery Cable Wiring Harness M8D2-14N170-AB

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6G9T-14240-HBK

Ford Mondeo Mk4 Door Wiring Loom Wire Harness Rear Right O/S 6G9T-14240-HBK

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8619095

BMW i3 I01 Hybrid Electric Earth Ground Cable Negative Battery Lead 8619095

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7PP907539A

Porsche Cayenne 92A Dashboard Light Sun Solar Sensor Unit 7PP907539A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7311030-2

BMW F45 Rear Light Lamp Trim In The Side Panel Wiring Cable Right O/S 7311030

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR028116

Land Rover Range Rover Evoque L538 Alternator 2.2 TDCI BJ32-10300-AD

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2079053300

Mercedes-Benz W207 Cabrio A207 Rear Left N/S Radio Aerial Antenna Amplifier

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2098200326

Mercedes C209 Body Control Module Unit Temic 376 800 GZ A2098200326

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AV1T-18B955-BD

Ford B-Max Dashboard Display Multifunction Screen Monitor AV1T-18B955-BD

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7515197-2

MINI Cooper One R50 W10 Battery Cable Plus Pole 7515197

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8585731

Engine Wiring BMW F30 F31 F36 N47N xDrive Automatic Gearbox Loom Harness 8585731

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2513200158-1

Valve Block Mercedes W251 W906 Air Suspension Control Unit Module A2513200158

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9301522

BMW F01 F02 F07 F10 F11 CAS4 Control Unit Key Reading Module 9301522

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0035223J

Audi A4 B8 Suond Amplifier System Speaker Module Unit 8T0035223J

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GJ32-14D620-BA

Land Rover Discovery Sport L550 Door Module Rear Driver's Side GJ32-14D620-BA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5B5D979

BMW F74 M235iX B48R 300HP Engine Control Unit ECU Set DME 5B5D979 Automatic

€731.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AH42-14630-AFB

Range Rover L322 Door Wiring Harness Loom Front Passenger Side AH42-14630-AFB

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5H32-10E921-BA

Range Rover L320 Aerial Antenna Amplifier Module 5H32-10E921-BA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2990003-3

BMW X1 E84 Headlight Lamp Light Front Cable Wire Plug Left N/S 2990003

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0959655B

Audi A4 B9 A5 S5 F5 Air Module Control Unit ECU 8W0959655B

€237.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8617707

BMW Mini Cooper F55 F56 Wiring Harness Engine Supply Module Cable Loom 8617707

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8517874-8

BMW F20 118d F30 318d N47N 143HP Engine ECU Kit DDE 8517874 + Key + FEM + Lock

€222.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059007147-1

Mercedes W205 C200 264.915 198HP Engine Control ECU Kit A2649000700 Automatic

€560.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9496815

Front Impact Sensor BMW F70 G05 G14 G15 G29 Safety Crash Module Unit 9496815

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8R0907468T

Audi Q5 8R Gateway Module Control Unit ECU 8R0907468T 8R0907468C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FW93-19C024-AB

Range Rover Sport L494 Bluetooth Antenna Amplifier Module FW93-19C024-AB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DK62-14301-BC

Range Rover L405 Negative Minus Battery Wiring Loom Harness Cable DK62-14301-BC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AT1T-15T850-AA

Ford Transit Connect PDC Parking Aid Warning Control Module Unit AT1T-15T850-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06K907425C-2

VW Scirocco Mk3 2.0 TFSI CULA 220HP Engine ECU Kit BCM + Key 06K907425C Manual

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8P0972051

Audi A3 8P Seat Belt Warning System Wire Harness Cable Loom 8P0972051

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03G906021LG-1

Audi A3 8P 2.0 TDI BKD 140HP Engine Control Unit ECU Kit 03G906021LG Manual

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8689722-2

BMW F32 Engine ECU Control Unit 184 HP 420iX B48 2.0 Petrol B48 8689722 KIT

€550.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8677247-1

Mini Countryman F60 Cooper Cable Alternator Starter Wire 12428677247 8677247

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8835156

BMW U06 X1 U11 High-Voltage Battery Radiator Cooler Line Hose Tube Pipe 8835156

€560.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2049013502

Mercedes W204 S204 Airbag Module Air Bag SRS Control Unit ECU A2049013502

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8P0837220D-2

Audi A3 S3 8P Flip Key Fob Remote Control Button Lock Cylinder 8P0837220D SET

€70.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0959760F

Audi A8 D4 Front Seat Backrest Adjustment Module Left Right N/O/S 4H0959760F

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1645400074

Mercedes W164 W251 Front Seat Wiring Loom Harness Left N/S A1645400074

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1790382

Ford Galaxy Mondeo Mk5 S-Max Alternator 2.0 Petrol 150A 6G9N-10300-ABC 1790382

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8727997

BMW F44 Gran Coupe Door Wiring Harness Rear Door Right Left N/O/S 8727996

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9153137

BMW F01 F02 F03 Holder Bracket Control Unit Top Rear Side View 9153137

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. F1ET-14B345-AA

Ford Focus Mk3 Side Air Module Crash Impact Sensor Control Unit F1ET-14B345-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6789514

BMW X6 E71 ICM Integrated Chassis Management Control Unit Brakes 6789514

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6G9T-14A076-CA

Ford Mondeo MK4 Fuse Box Cover Panel Hosing Lid 6G9T-14A076-CA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8632692

BMW X5 F15 N20 Petrol Wiring Harness Transmission Gearbox Module Cable 8632692

€175.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6C0907359

Audi A4 B8 Air Suspension Module Regulation Control Unit 6C0907359

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6H32-18K891-AA

Range Rover Sport L320 Aerial Antenna Amplifier Unit 6H32-18K891-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4L0907290A

Audi Q7 4L Door Control Unit Module ECU Front Right O/S 4L0907290A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6926333

Door Cable BMW E93 Convertible Wiring Loom Front Cables Passenger Side 6926332

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1679050200

Mercedes A238 Tailgate Boot ECU Control Unit Module A1679050200

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9366407

BMW F20 F21 F30 F31 F32 Body Comfort Module FEM ECU LR01 Control Unit 9366407

€161.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8702093-1

Head-Up Display Hud Mini Cooper F54 F55 F56 F57 Project Dash Screen 8702093

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7639661

BMW F20 Alternator Engine Alternator Generator Denso 170A Petrol N55 7639661

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8E1971035CQ

Audi A4 B7 Front Door Cables Wiring Loom Passenger's Side 8E1971035CQ

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03G906056S-3

Audi A3 8P 1.9 TDI BLS 105HP Engine Control ECU Kit BCM + Key 03G906056S Manual

€218.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A9078209400

Mercedes Sprinter W907 W910 Radio Stereo Player Head Unit A9078209400

€104.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 52185648

Vauxhall Movano C Electronics Control Module Unit 52185648

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2218203375

Mercedes W221 Bluetooth Antenna AMP Amplifier Module A2218203375

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3AA907273B

Volkswagen Passat B7 Tyre Pressure Control Module TPMS 3AA907273B

€184.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6825541

BMW F20 F21 F22 F30 F32 Front Electronic Module Control Unit FEM 6825541

€70.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009002201

Mercedes R172 W204 W212 C218 Fuel Pump Module Control Unit A0009002201

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7110854

BMW Z4 Series E85 Roadster Head Lamp Cleaning Device Container 7110854

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2Q0980653H

Seat Ibiza KJ1 VW Polo MK6 Front Camera Lane Assist Control Unit 2Q0980653H

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0955559M

Volkswagen VW Golf Mk5 Rain Sensor Windscreen Control Unit Module 1K0955559M

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

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