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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Ford Focus Mk3 Voltage Stabilisation Control Module Bosch ECU BV6T-14B526-BC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C9971104B

Volkswagen Passat B6 Rear Bumper Parking Sensor Wiring Loom Harness 3C9971104B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9137799

Door Wiring Mini Cooper R55 R56 R57 R58 R59 Passenger Cable 9137799

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0035063D

Audi A6 C8 MIB2 Multimedia Navigation Radio Control Head Unit 4K0035063D

€664.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV1T-14A583-AAC

Ford B-Max Mk1 Tailgate Boot Lid Loom Wiring Harness Cable AV1T-14A583-AAC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CK52-14687-ED

Range Rover L405 Rear Door Wiring Harness Ambient Left N/S CK52-14687-ED

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0915429C

Audi A6 C7 Battery Positive Terminal Cover 8K0915429C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B035209B

Porsche Macan 95B Sound Amplifier Bracket Mount Holder Carrier 95B035209B

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4998243

Ford Transit Custom Alternator Wirng Assy Loom Cable 4T1T-14305-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. V23136-J4-X62

Jaguar XF X250 Multi Use 4 Pin Grey Relay Transmiter Fuse V23136-J4-X62

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9264688

BMW F20 PDC Parking Sensor Wiring Harness Cable Loom 9264688

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0035156A-1

VW Volkswagen Touran 1T Stereo Radio CD Changer Player Head Unit 5K0035156A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-13444-AA

Land Rover Discovery Sport L550 Rear Tailgate Boot Wiring Loom FK72-13444-AA

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8Y4971104BK

Audi S3 8Y Rear Bumper Wiring Harness Cable Loom 8Y4971104BK

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118704126

Mercedes W221 Door Control Module Right Rear O/S A2118704126

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-06040-A

Land Rover Discovery Sport L550 Fuse Box Trim Cover BJ32-06040-A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8512498-5

BMW E84 E90 LCI 20dX 320xd N47 177HP ECU Kit DDE 8512498 CAS3 + Key Manual

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0971081A

Audi A3 8V Windscreen Washer Wiring Loom Harness Cable Unit 5Q0971081A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469000012-2

Mercedes W176 W246 Radio Head Unit COMAND Navi Player Control Unit A2469000012

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02E911024M

Audi A3 8V 2.0 TFSI DJHA Starter Motor 12V 02E911024M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8691838-3

Mini F54 F55 F57 B38 136HP Petrol Engine Control ECU Kit DME 8691838 Manual

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FU5T-15604-DAJ

Ford Mondeo Mk5 Body Control Module Fuse Relay Box BCM ECU FU5T-15604-DAJ

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK3T-14D502-FED

Ford Transit Mk8 2.2 TDCI Manual Transmission Wiring Harness BK3T-14D502-FED

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1679004209

Mercedes W177 Head Unit Media Player Audio Radio Controller A1679004209

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6932644-1

BMW 3 5 Series E60 E71 E90 E92 Suppression Filter Aerial Module Antenna 6932644

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6549001400-1

Mercedes W213 E220 CDI 654.920 194HP Engine ECU Kit A6549001400 Automatic

€455.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G92-10E887-EE

Land Rover Freelander 2 L359 GPS Navigation Sat Nav DVD Player 6G92-10E887-EE

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045420323

PDC Display Mercedes W204 Front Parking Sensor Screen Control Unit A2045420323

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055403742

Mercedes W205 Front Driver's Door Wiring Harness Cable A2055403742

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5TA998477

Volkswagen Tiguan 5N LED Daytime Running Light Headlight Control Unit 5TA998477

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2115455332

Mercedes C219 SAM Module Comfort Control Unit A2115455332

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8486839-3

BMW F20 LCI 118i B38 136HP Engine ECU Kit DME 8662411 + FEM + Key Automatic

€469.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2218207510

Mercedes W221 Anti Theft Roof Alarm Ultrasonic Motion Sensor Unit A2218207510

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2095148

Ford Focus Mk3 Kuga Mk2 Door Module Control Unit Driver's Side F1ET-14B531-BG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1486455080

Peugeot Expert Citroen Jumpy Negative Battery Terminal Cable Wiring 1486455080

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2309050639

Mercedes X164 W221 Ignition Key Remote Control Unit Fob A2309050639

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5341614

Ford Mustang GT Mk6 Starter Motor Engine Actuator Manual 5.0 V8 GR3T-11000-AA

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C2Z3667

Jaguar XF X250 Front Bumper Wiring Harness Loom Cable Parking Aid C2Z3667

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9305736

BMW X1 E84 ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9305736

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0907115-2

Audi TT 8J 2.0 TFSI BWA 200HP Engine Control Unit ECU Manual 8J0907115 Kit

€218.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1DT-14A073-EH

Ford Focus Mk3 BCM Body Control Module Fuse Box F1DT-14A073-EH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9325908

BMW F36 Gran Coupe Door Wiring Harness Cable Loom Front Passenger Side 9325908

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q4959395E

Skoda Superb Mk3 3V Rear Door Control Unit Module Left Right N/O/S 5Q4959395E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465409611

Mercedes-Benz A B Class W176 W246 Battery Surround Trim Box Bracket A2465409611

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9454625

Mini F66 BMW F74 Gran Coupé Engine Starter Motor Denso 12V B48A20P 9454625

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8917042160

Toyota RAV4 II A2 SRS Air Crash Sensor Control Unit Module 8917042160

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9222071

BMW F07 BCM Body Control Module Unit Controller 9222071

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K8971035BH

Audi A6 C8 Door Wiring Harness Cable Loom Front Driver's Side 4K8971035BH

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-18808-AC

Land Rover Discovery L550 Boot Trunk Subwoofer Rear Bass Speaker FK72-18808-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0971035AK

Audi Q3 8U Door Loom Wiring Harness Cable Front Driver's Side 8U0971035AK

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9V4T-14B321-AB

Ford Kuga Mk1 Air Module Control Unit ECU 9V4T-14B321-AB

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0035305

Audi S4 B9 S5 8F Sound Actuator Engine Sound Booster Generator 8W0035305

€332.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 5N0959351B-1

Volkswagen Tiguan 5N Sharan 7N Impact Crash Sensor Left Right N/O/S 5N0959351B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7795779

BMW 5 Series E60 E61 Cable Alternator Starter Base B 520d Diesel M47N2 7795779

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JPLA-15C859-AM

Range Rover Sport L494 Parking Aid Control Module ECU JPLA-15C859-AM

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775408340

Mercedes W177 W247 Electrical Wiring Harness Left Right N/O/S A1775408340

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9259205

BMW F10 Seat Wire Harness Loom Cable Front Right O/S 9259205

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P5959107B

Porsche Cayenne Turbo 92a Electric Tailgate Bootlid Control Module 7P5959107B

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6229000700

Mercedes W447 Bosch Glow Plug Relay Controller Unit Control Module A6229000700

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2128202289

Mercedes W212 Aerial Antenna Module Amplifier Rear Window Top Left A2128202289

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR185962

Land Rover Rover Evoque L551 Cruise Control Unit ECU Speed Sensor R8D2-9G768-AB

€218.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. N8E2-19C164-JB

Land Rover Range Rover Velar L560 Audio Sound Control Amplifier N8E2-19C164-JB

€854.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465405733

Wiring Harness Mercedes X156 W176 Petrol Battery To Starter Cable A2465405733

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0907115N-2

Audi TT 8J 2.0 TFSI BWA 200HP Engine Control Unit ECU Kit 8J0907115N Manual

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9L34-14B006-AC

Ford Ranger Mk6 Impact Sensor Control Unit Module 9L34-14B006-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9069009100

Volkswagen Crafter 35 Radio CD Player Navigation Unit Screen Display A9069009100

€232.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0971845AC

Audi A4 B7 Seat Exeo Engine Wiring Loom Plug Plastic Holder Bracket 8E0971845AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8589170

Starter Harness BMW X3 G01 X4 G02 30dX 40dX B57 Cable Base B+ Loom 8589170

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. P1WT-19H517-AE

VW Volkswagen Amarok Mk2 Auto Brake Trailer Module Control Unit P1WT-19H517-AE

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BM5T-14B321-CF

Ford Focus Mk3 Air Module Control Unit ECU Controller BM5T-14B321-CF

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0971845A-2

Audi A6 C6 Comfort Body Module Fuse Relay Box Control Unit 4F0971845A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9383681-1

Mini F55 Fuse Box Front Body Control Module ECU BCM Unit 13275881

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7839665

BMW E90 E92 E93 LCI M3 S65 Cable Alternator Starter Wiring 7839665

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1648200564-2

Mercedes GL X164 Rear Lamp Side Panel Light Plug Socket Left N/S A1648200564

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045461080

Mercedes W204 W212 Rear Door Wiring Loom Harness Left N/S A2045461080

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CV2T-10C679-BG

Ford Fiesta Mk7 Battery Negative Lead Terminal Cable Loom Harness CV2T-10C679-BG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT-14027-ACF

Ford Fiesta Mk7 Door Wiring Loom Harness Rear Left N/S C1BT14027ACF 2008887

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8605454

Engine Wiring BMW F10 F21 F30 LCI F36 N20 Loom Module Harness Cable 8605454

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229002112

Door Module Mercedes W205 GLC C253 Control Unit Rear Right O/S A2229002112

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G9T-14A481-AA-1

Land Rover Discovery Sport L550 Fuse Box Module Control Unit 50EH199762ST3

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H2Z-14B345-BA

Land Rover Discovery 3 L319 Crash Impact Sensor Air Module 5H2Z-14B345-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L5971693B

Porsche Cayenne 9PA Rear Door Wiring Harness Cable Left Right N/O/S 7L5971693B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V0035034E

Audi A3 S3 8V RS3 Infotainment Control Unit MIB High Dash Panel 8V0035034C

€569.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR023539-2

Land Rover Discovery 4 L319 Front Headlight Wiring Right O/S AH22-13W029-FD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8585380

BMW X3 F25 X4 F25 30dX N57N 258HP Engine Control ECU DDE 8585380 Automatic

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8907368

Audi A7 4G Body Convinience Module Control Unit Bracket Mount Holder 4G8907368

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059002922

Door Module Mercedes W205 W253 C253 Front Left N/S Control Unit ECU A2059002922

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T8035225C

Audi A5 8T Audio Radio Aerial Amplifier Control Unit 8T8035225C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1FT-19G481-AH

Ford Focus Mk3 ST Keyless Entry Comfort Control Module Unit F1FT-19G481-AH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059059404

Mercedes W176 Ignition Key Remote Control Unit Fob A2059059404

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2475451101

Mercedes C118 W177 C247 Fuse Box Module Cover Cap Trim Housing M282 A2475451101

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0910115K-1

Audi A4 B7 Engine Control ECU 2.0 TFSI BWE 200HP Manual 8E0910115K

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-14D618-BE

Land Rover Discovery Sport L550 Door Control Module Driver's Side FK72-14D618-BE

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1439559

BMW X5 Series E53 Battery Cable Plus Pole 1439559

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6H52-10E889-AD

Land Rover Freelander 2 L359 Radio Sat Nav Display Touch Screen 6H52-10E889-AD

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6035209

Volkswagen Touareg 7P Radio Navi CD Player Head Unit Mount Bracket 7P6035209

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005400564

Mercedes W205 Negative Cable Battery Lead Minus Pole Wiring A0005400564

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139065706-1

Fuse Box Mercedes W205 W213 Front Engine Compatment Relay Module A2139065706

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

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