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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Audi A5 F5 Rear Hatch Tailgate Boot Lid Control Module Unit ECU 8W8959107E

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 99761822101

Porsche 911 Cayman 987 Boxster Crash Impact Sensor Left Right N/O/S 99761822101

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2135409616

Mercedes Sprinter W910 Battery Sensor Negative Terminal Cable Wiring A2135409616

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4M4915233AE

Audi A6 C8 Boot Battery Monitoring Control Module Unit 4M4915233AE

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2139005220

Mercedes W213 SAM Module Rear Body Comfort Control Unit ECU A2139005220

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8506444

BMW E90 E91 LCI E92 330d N57 245HP ECU Engine Control Unit DDE 8506444 Manual

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A4475406777

Alternator Wire Mercedes Vito W447 Battery Alternator Cable A4475406777

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0465456628

Mercedes W203 W204 W218 Front Seat Wiring Loom Plug Connector A0465456628

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L6971121J

Volkswagen Touareg 7L Front Door Wiring Loom Harness Passenger's Side 7L6971121J

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P5907441B

Porsche Cayenne 92A Rear View Camera System Control Module ECU 7P5907441B

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8P4971036J

Audi A3 8P Front Left N/S Door Harness Cable Loom 8P4971036J

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. FK72-19C299-AA

Land Rover Evoque L538 Sat Nav Radio Display Screen 8 Inch FK72-19C299-AA

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9205476

BMW 1 Series E81 E87 LCI Positive Battery Lead Distribution Box Cable Rear

€85.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9339829

BMW G01 G30 Battery Jump Start Terminal Power Distribution Unit 600W 9339829

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6801326

BMW F15 Door Wiring Harness Loom Cable Front Left N/S 6801453

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9287441

BMW F21 F22 F23 Wiring Loom Harness Passenger Side 9287441

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8E0941029BC-2

Audi RS4 B7 Headlight Lamp Light Left N/S Harness Wire Loom 8E0941029BC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9355560

BMW G30 G31 G11 G12 Hybrid Negative Battery Cable Lead Wiring 9355560

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. L8B2-10C784-BB

Range Rover Evoque L551 High Voltage Hybrid Battery Lithium-Ion L8B2-10C784-BB

€332.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P5035481D-2

Porsche Cayenne 92A Sound Audio Amplifier Bose AMP 7P5035481D

€284.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9348411

BMW X3 F25 Hifi System Audio Sound Amplifier AMP Module Unit 9348411

€85.95

Free delivery: Aug 5 – 10

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055401542

Mercedes W205 Rear Door Harness Wiring Cable Left Right N/O/S A2055401542

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129005200

Seat Module Mercedes W204 W212 Memory Control Unit Driver's Side A2129005200

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2389053301

Tailgate Trunk Mercedes X117 X156 W205 Boot Rear Control Module Unit A2389053301

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009009209

Mercedes W205 C253 Diesel Adblue Module Control Unit ECU A0009009209

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6519003403-1

Mercedes W906 314 CDI OM651 Engine Module ECU Kit A6519003403 Automatic

€474.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BJ32-18K891-AA

Range Rover Evoque L538 Aerial Antenna Amplifier Module Unit BJ32-18K891-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1775355

Ford Focus Mk3 Negative Earth Cable Lead Loom Harness CV6T-14324-UAB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5B79167

BMW F74 Gran Coupé FDR High REDE Control Unit ECU Front Driver Door 5B79167

€180.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4F0919603

Audi A6 C6 Display Screen Multimedia Navigation Dashboard Unit 4F0919603

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7542310-7

Mini Cooper R50 W10 Petrol Engine Control Unit Module ECU DME 7542310 Manual

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9253209

BMW E81 E87 LCI E90 E91 N43 DC/DC Wandler Torque Converter Module ECU 9253209

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6938215

BMW 3 Series E90 E91 Front Right O/S Driver Side Door Wire Wiring Loom 6938210

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2098202126

Mercedes C209 Door Control Module Front Left N/S A2098201926

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6842527

BMW G20 Battery Terminal Voltage Distribution Box 400W MID 6842527

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7542934-1

BMW E60 E61 E65 N62N Petrol Alternator Generator 180A 14V 7542934

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3M5T-19E663

Ford Kuga C394 Mk1 Sun Solar Light Sensor Control Unit 3M5T-19E663

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2049001206

Mercedes W204 Coupe Door Module Front Left N/S Control Unit A2049001206

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9281717

BMW X5 F15 Camera Kafas Front Windscreen Camera 9281717

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L0971771B

Volkswagen Touareg 7L Gear Selector Switch Harness 7L0971771B

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. HPLA-14301-AC

Range Rover Sport L494 Negative Battery Cable Wiring Loom HPLA-14301-AC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2229002308

Mercedes W205 S205 W222 Door Control Module ECU Rear Right O/S A2229002308

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q4959593R

Seat Leon Cupra Mk3 Front Door Control Module Unit Driver Side 5Q4959593R

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P0937548J

Porsche Cayenne 92A Fuse Box Module Hybrid 7P0937548J

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8621839

BMW F20 F21 F30 LCI G30 B38 B48 Starter Motor Engine Petrol 8621839

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7222633-1

BMW E90 E91 LCI Flat Cable Wiring Wire CAS Start Stop ECU Loom 7222633

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0959655BD

Audi A3 8V Air Module Control Sensor SRS System ECU Unit 5Q0959655BD

€156.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8T8971029K

Audi A5 S5 8T Door Wiring Loom Harness Cable Wire Front Right O/S 8T8971029K

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P5971225B

Porsche Cayenne 92A Positive Battery Cable Wiring 3.0 Diesel 7P5971225B

€47.95

Free delivery: Aug 5 – 10

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 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 83A945093D-2

Audi Q3 F3 Rear Tail Light Lamp LED Wiring Harness Cable Left N/S 83A945093D

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3C8035279S

VW Volkswagen Passat CC Multimedia Stereo Radio CD Player Head Unit 3C8035279S

€161.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9367673

Mini Cooper F55 F56 F57 Visual Boost Surround Central Cover Instrument 9367673

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5NA945207C-2

VW Volkswagen Tiguan Mk2 Rear Tail Light LED Wiring Left Nearside N/S 5NA945207C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3B0972722

Audi A1 8X A3 S3 RS3 8P 8V A6 S6 C7 Lumbar Support Harness Loom Wire 3B0972722

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BK2T-14B446-AD

Ford Transit Custom Mk1 Front Panel Catch Cable Wiring Harness BK2T-14B446-AD

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 038906019NJ-2

Skoda Fabia Rs 6y Engine Control ECU 130HP BLT 1.9 Diesel 038906019NJ Manual Set

€208.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009063622

Mercedes W166 W204 R231 Alternator Generator 180A 14V A0009063622

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P0941828B

Volkswagen Touareg 7P 3.0 TDI Fuse Box Control Module 7P0941828B

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0907063DJ

Audi RS4 B8 Body Control Unit Module ECU BCM 8K0907063DJ

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009003039

Mercedes C118 W177 W247 Starter Battery Control Module DC Converter A0009003039

€322.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. AA6557903HQ

Ford Mustang Mk6 Headlight Module Control Unit ECU AA65-57903-HQ

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9267205-1

BMW E87 LCI ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9267205

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9252549

BMW F12 Front Seat Control Unit Module Memory ECU 9252549

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9468429

BMW F45 LCI Battery Cell Module Supervision Circuit Control Unit 225xe 9468429

€170.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8714773

BMW 5 G30 F90 M5 Door Wire Cable Harness Loom Wiring Front Driver's Side 8714773

€85.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. FK72-14633-BCD

Land Rover Discovery Sport L550 Door Wiring Rear Left N/S FK72-14633-BCD

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8044501

BMW F06 F10 F12 F13 LCI Fuel Injectors Wiring Loom Harness Cyl 1-4 S63N 8044501

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0907064FH

Audi A6 C7 BCM2 Comfort Body Control Module Electrical Unit ECU 4H0907064FH

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8573257-6

BMW F10 F11 520d Diesel N47N 184HP Engine Control Unit ECU DDE 8573257 Automatic

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5K0907159A

Volkswagen Golf Mk6 Impact Sound Control Module Unit 5K0907159A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0907297A

Audi S5 8T Parking Aid PDC ECU Control Unit Bracket Holder Retainer 8K0907297A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4K0915459F-1

Audi A6 C8 Power Disctribution Control Module 4K0915459F

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9365212

BMW X5 F15 Door Light Wiring Harness Cable Loom Front Left Right N/O/S 9365212

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0907063DD

Audi A5 8T Onboard Comfort Supply BCM Control Module Unit ECU 8K0907063DD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1698201085

Mercedes W245 ECU Control Unit Sensor Air Module A1698201085

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2045450003

Mercedes W204 Fuse Box Battery Starter Cable Cap Cover Top Lid A2045450003

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2049001506

Mercedes W204 Coupe Door Module Front Right O/S Control Unit A2049001506

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129061703-2

Mercedes S212 Rear Tail Light Lamp Wiring Harness Outer Left N/S A2129061703

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5S6Y-19G229-AB

Ford Fiesta St Mk5 Alarm Siren Horn 2.0 DURATEC ST150 N4JB 5S6Y-19G229-AB

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR133289

Range Rover Sport L494 Transfer Box Wiring Harness 3.0 Diesel LPLA-13N850-BB

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2218201875

Mercedes W221 Aerial Antenna Control Unit Keyless Go Entry Module A2218201875

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DK52-14B673-AC

Range Rover Vogue L405 Upper Tailgate Control Module Unit DK52-14B673-AC

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9V4N-12A650-BG

Ford Kuga C394 Engine Control Unit ECU 200HP 2.5 Petrol 9V4N-12A650-BG Automatic

€332.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. FW93-14F012-BD

Land Rover Discovery Sport L550 Tyre Pressure Control Module FW93-14F012-BD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6915943

BMW 7 X3 Z4 Series E65 E66 E83 E85 E86 Interface Japan Luggage Module 6915943

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4L0907290

Audi Q7 4L Gateway Convenience Module Unit Control ECU 4L0907290

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P5971363CL

Porsche Cayenne S 92A Seat Wiring Harness Cable Loom Front Left N/S 7P5971363CL

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1388277080

Citroen Relay 35L III Positive Battery Wiring Loom Harness Diesel 1388277080

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9298936

BMW F20 F21 F22 F30 F31 Alpine CD Champ 2 Radio Player Head Unit 9298936

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8584276-1

BMW F30 F31 320d Diesel N47N 163HP ECU Kit DDE 8584276 + Key + FEM 8584276

€237.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4G0907397Q

Audi Q3 8U Headlight Module Ballast Relay Control Unit LCM 4G0907397Q

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8H0035411D

Audi A3 8P Door Card Speaker Rear Left Right N/O/S Audio Speaker 8H0035411

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2225618

Ford Transit Custom Mk1 Engine Starter Motor 2.0 EcoBlue GK2T-11000-AB

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9178962

BMW X5 X6 E70 E71 Power Distribution Fuse Box Battery 9178959

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4L0919283E

Audi Q7 4L PDC Parking Distance Sensor Control Module Unit ECU 4L0919283E

€108.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9252815

BMW F01 F02 F10 F11 LCI Power Distribution Fuse Box Front 9252815

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

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