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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Mini F54 F55 F56 Body Control Module Domain Controller Unit BDC 9869880

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0915459

Audi A4 B8 A5 8T TT MK2 Positive Battery Terminal Cable Overload Fuse 8J0915459

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6S6Y-17K400-EC

Ford Fiesta St Mk5 Fuse Box Relay Box Module 2.0 DURATEC ST150 6S6Y-14401-NDE

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AW93-19C164-CV

Jaguar XF X250 Range Rover Sport L494 Audio Amplifier Unit Module AW93-19C164-CV

€175.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L5035741E

Porsche Cayenne 955 9PA Motorola Telephone Phone Control Unit Module 7L5035741E

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BA6T-14A075-AA

Ford Fiesta Mk7 Fuse Realy Box Module Unit Bracket Gasket Panel BA6T-14A075-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8654977

BMW X5 F15 N20 Petrol Sensor System Engine Wiring Harness Cable Loom 8654977

€175.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CK5214C249AA

Range Rover L405 Front Driver's Seat Control Module Unit CK52-14C249-AA

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CC1T-10300-CD

Ford Transit Mk8 2.2 TDCI Alternator Generator CC1T-10300-CD

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3W83-14B409-AC-1

Jaguar X-Type X400 S-Type XK8 X100 Bluetooth Control Module 3W83-14B409-AC

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1923703

Ford Kuga Mk2 Rear Outer Lamp Tail Light Taillight Left N/S 1923703

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7604347

BMW F20 F30 F31 F32 Bracket Holder Power Distribution Control Unit 7604347

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR014003-2

Land Rover Discovery 4 L319 Rear Taillight Lamp Wiring Cable Left N/S LR014003

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8662849-2

Mini Cooper S F54 F55 F56 B48 192HP Engine Control Module ECU DME 8662849 Manual

€398.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055400010

Mercedes W205 Door Wiring Harness Loom Cable Front Passenger Side A2055400010

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8589145-12

BMW F20 120d F30 LCI 320d B47 190HP Engine Unit ECU Kit DDE 8589145 Key + FEM

€336.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0035195P

Audi A3 8P CD Player Radio Stereo Head Unit 8P0035195P

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2056186000

Mercedes W205 W238 Rear Battery Holder Bracket Mount Strap Clamp A2056186000

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7182509

BMW E92 E93 Plug Socket Wire Bi-Xenon Headlight Headlamp Lamp Front Left N/S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L6035530B

VW Volkswagen Touareg 7L Aerial Antenna Amplifier Control Unit Module 7L6035530B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A2D553

Audio Receiver BMW F40 G22 G30 G31 X3 G01 DAB ECE Control Unit Module 5A2D553

€73.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2125458040

Bracket Holder Mercedes W204 W212 W222 Auxiliary Generator Battery A2125458040

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045402210

Mercedes W204 Front Door Electrical Cable Wiring Loom A2045402210

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C0907159A

Volkswagen Polo Impact Sound Control Module Unit 6C0907159A

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645400641

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

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P5035225C

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2191045

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 99161818510

Porsche 718 Boxster 982 Parking Aid Control Unit Module 99161818510

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479007312

Mercedes W212 Suspension Module Adjustment Control Unit Controller A2479007312

€94.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2208200175

Mercedes W220 Front Door Keyless Entry Antenna Left N/S Side A2208200275

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0971036AA-1

Audi A1 8X Door Wiring Harness Loom Cable Front Passenger Side N/S 8X0971036AA

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C1T-14A076-BA

Ford Transit Mk7 Fuse Box Positive Terminal Cover Trim Panel 6C1T-14A076-BA

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049060902-2

Mercedes W204 COMAND Head Unit Navigation CD Player Radio Unit A2049060902

€355.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99761817112

Porsche Cayman 987C Immobilizer Alarm Control Module Unit 99761817112

€61.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8V21-12A650-SF

Ford Fiesta Fusion MK7 1.2 Petrol ECU Engine Control Module 82HP 8V21-12A650-SF

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129003702-1

Mercedes W212 Fuse Box Rear SAM Relay Control Unit Module A2129003702

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EB3T-19H464-AD

Ford Ranger Mk3 GPS Sat Nav Antenna Control Module ECU EB3T-19H464-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1TO907503A

Audi RS4 B8 Headlight Lamp Level Sensor Arm Front Left N/S 8K0941285P

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0051433

Audi A3 8P A4 B7 TT 8J Bluetooth Hands-Free Control Unit Module 8J0051433

€70.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5A81B23

BMW F74 Gran Coupé Rear Door Trim Panel Wiring Harness Left Right N/O/S 5A81B23

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EJ32-14301-CD

Range Rover Evoque L538 Negative Battery Cable 2.2 Diesel EJ32-14301-CD

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8W0035188E

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

€203.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 9181454

BMW X1 E84 Aerial Antenna Noise Suppression Filter 9181454

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 6821407

High Voltage Cable BMW F45 Mini F60 Hybrid Harnes EDH 6821407

€37.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A0009951033

Mercedes W204 Exhaust Pipe Connector Clamp Holder M274 Petrol A0009951033

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2025402373-2

Mercedes W169 W203 W211 2 OBD Diagnostic Plug Cover A2025402373

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479009312

Mercedes W910 Telematics Module Communication Blutooth Control A2479009312

€80.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2195406207

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

€61.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8619095

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7PP907539A

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1665400224

Mercedes W166 C292 Fuse Relay Box Cover Trim Panel Lid Housing A1665400224

€42.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2098200326

Mercedes C209 Body Control Module Unit Temic 376 800 GZ A2098200326

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0971030BD

Audi Q5 8R Front Door Wiring Loom Harness Cable Passenger Side 8R0971030BD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2GA035577B

Volkswagen T-Roc Aerial Antenna Amplifier Module Unit Left N/S 2GA035577B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. D1BT-14D212-GA

Ford Fiesta Mk7 Bluetooth Interface Control Unit Module ECU D1BT-14D212-GA

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. YWC000710

Range Rover L322 Air Module Control Unit SRS YWC000710

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7515197-2

MINI Cooper One R50 W10 Battery Cable Plus Pole 7515197

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2513200158-1

Valve Block Mercedes W251 W906 Air Suspension Control Unit Module A2513200158

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009985323

Mercedes C W204 E W212 Positive Rear Battery Cable Cover Trim A0009985323

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465400024-1

Mercedes-Benz W176 W246 W242 Relay Fuse Box Plastic Cover Panel Trim A2465400024

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 7L0937555

Porsche Cayenne 9PA Volkswagen Touareg 7L Fuse Box Battery Cover 7L0937555

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LJG3704AA

Jaguar XK8 X100 Cabin Cable Fusebox Positive Harness Right O/S LJG3704AA

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. DV6T-14A073-SL

Ford Transit Connect Mk2 Fuse Relay Box Body Control Module Unit DV6T-14A073-SL

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H32-10E921-BA

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8R0907468T

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8P0972051

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

€47.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

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