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 A7 4G8 Door Control Module Electrical Unit ECU Rear Right O/S 4G8959795A

€23.95

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BMW X1 E84 Radio Navigation Head Unit Android CarPlay Screen Display 10.25"

€237.95

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Mercedes W164 ECU Control Unit Bracket Holder A1645451840

€23.95

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Mini Cooper S R56 LCI R60 N18 1.6 184HP Engine Unit ECU Kit DME 7620985 Manual

€569.95

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Audi A6 C7 Avant Antenna Amplifier Upper Left N/S 4G9035225C

€23.95

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Sam Module Mercedes S205 Relay Fuse Box Rear Control Module In Trunk A2059007437

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BMW F74 Gran Coupé Radio Audio Remote Control Receiver 7928690

€23.95

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Part no. A2075406233

Mercedes A207 Front Seat Wiring Harness Cable Left Right N/O/S A2075406233

€56.95

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Part no. 11110150000

Audi Q3 F3 Headlight LED Inner Module Unit Left N/S 11080370000

€113.95

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Part no. A2059001811

Mercedes W205 Rear Door Control Module Unit Left N/S ECU A2059001811

€23.95

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Part no. A2055401900

Mercedes W205 Parking Sensor Wiring Rear Bumper PDC Loom Cable A2055401900

€47.95

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Part no. 6832695

Mini Clubman F54 Battery Cable Negative Terminal Wiring 6832695

€23.95

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Part no. DPLA-14F498-AA

Range Rover Sport L494 Vogue L405 A/C Climate Control Unit Module DPLA-14F498-AA

€66.95

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Part no. HJ32-14369-ACB

Range Rover Evoque L538 Front Parking Sensor Wiring Loom Harness HJ32-14369-ACB

€47.95

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Part no. 6C0971349AN

Volkswagen Polo Gti 6c Battery Wiring Harness Loom Cable 6C0971349AN

€23.95

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Part no. A2429004101

Mercedes W204 W212 Telephone Control Unit Module ECU A2429004101

€23.95

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Part no. 8R0971035A

Audi Q5 8R Door Wiring Loom Harness Electrical Cable Driver's Side 8R0971035A

€23.95

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Porsche Cayenne 92A Starter Motor 385HP 4.2 Diesel CUDC Automatic 057911023J

€189.95

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Part no. 9355490

Mini Cooper F56 Body Control Comfort Module Unit BDC FEM ECU 9355490

€165.95

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Mini Cooper One F57 Convertible Air Module Control Unit 6818815

€85.95

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Part no. 8E1910560

Audi RS4 B7 Engine Control Module ECU 4.2 Petrol 419 HP BNS 8E1910560 Manual

€569.95

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Part no. K8D2-18C901-CD

Range Rover Evoque L551 Antenna Control Unit Amplifier Left N/S K8D2-18C901-CD

€28.95

Free delivery: Sep 16 – 17

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Part no. 7641798-1

Mini Cooper F54 F55 F56 F57 F60 1 Battery Tray Cover Trim Boot 7641798

€23.95

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Part no. KG9T-9B243-AC

Ford Mondeo Mk5 Wiring Cable Adapter Connector KG9T-9B243-AC 2374708

€23.95

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Part no. 95B980654D

Porsche Macan 95B Front Windscreen Lane Assist Kafas Camera 95B980654D

€218.95

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Volkswagen Golf Mk6 Engine ECU Kit 1.4 TSI CAXA 122HP Manual 03C907309A

€170.95

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BMW X5 Series E70 LCI Ventilation Grommet Unit Box Cover 7798875

€23.95

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Part no. 4KE035282B

Audi A4 B9 Bluetooth Telematics Control Unit Communications Module 4KE035282B

€279.95

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Audi A3 8P PDC Parking Distance Control Sensor Module Unit ECU Phantom Black Z9Y

€23.95

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Part no. NU5T-14G371-GAA

Ford Puma Ecosport Sat Nav Navigation Control Module ECU NU5T-14G371-GAA

€89.95

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Part no. F1B112A650YB

Ford Fiesta Mk7 Engine ECU Control Unit 105HP 1.6 Petrol Automatic F1B112A650YB

€104.95

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Part no. A6421507100

Mercedes W164 ML350 OM642 4-Matic 224HP Engine Control ECU A6421507100 Automatic

€146.95

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

€47.95

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Part no. 95561264500

Porsche Cayenne 9PA Centre Console Armrest Wiring Harness Cable Loom 7L5971641

€23.95

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Part no. SOUNDSTAGE-SUBWOOFER

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

€341.95

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Part no. 5Q4959392B

Skoda Octavia 5E Front Door Control Module Unit Passenger Side 5Q4959392B

€23.95

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Part no. 5WA959436N

Audi S3 8Y Keyless Control Module Unit ECU 5WA959436N

€28.95

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Part no. AH42-971111-DB

Range Rover L322 Anti Theft Sounder Alarm Link Wiring Cable AH42-971111-DB

€32.95

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Fuse Box Mercedes S205 Interior Front Relay Fuse Box Sam Module A2059007539

€108.95

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Part no. HK83-14D617-BB

Land Rover L550 L538 Jaguar XE Door Module Front Passenger Side HK83-14D617-BB

€23.95

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Audi S6 C7 Door Trim Panel Wiring Wire Harness Cable Rear Left N/S 4G5971693A

€70.95

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BMW G20 LCI Fuse Box Control Module Unit 5A4CFA9

€165.95

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Part no. 5C0951171

Volkswagen Scirocco Mk3 Amarok Alarm Motion Sensor Control Module 5C0951171

€28.95

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Part no. 8P4035223B

Audi S3 8P Audio Sound BOSE Amplifier Stereo System Module 8P4035223B

€132.95

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Part no. 8662411-7

BMW F20 LCI 118i B38 136HP Engine Control ECU Kit DME 8662411 Manual

€569.95

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Part no. 8T0971035C

Audi A5 S5 RS5 8T Door Wire Harness Loom Cable Wiring Driver's Side 8T0971035C

€28.95

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Part no. 2S7T-14B192-AA

Range Rover L322 Black Relay 4-Pin Unit 12V 40A 2S7T-14B192-AA

€23.95

Free delivery: Sep 16 – 17

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Part no. 9371790

BMW 1 Series F20 Telematics Control Unit Module Bluetooth 9371790

€56.95

Free delivery: Sep 16 – 17

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Part no. 9426210

Mini F56 F57 BMW F45 B48D 231HP Engine Control Module Unit ECU 9426210 Manual

€313.95

Free delivery: Sep 16 – 17

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Part no. 1K0971615CT

Volkswagen Passat CC 3C B7 Engine Wiring Harness Loom Cable Guide 1K0971615CT

€23.95

Free delivery: Sep 16 – 17

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Part no. 4H0971160A

Audi A8 D4 Door Card Wiring Harness Loom Front Passenger Side 4H0971160A

€23.95

Free delivery: Sep 16 – 17

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Part no. 04L907309R-9

Audi A3 8V 2.0 TDI 150HP DCYA Engine Control ECU Kit 04L907309R Manual Gearbox

€142.95

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Part no. 8R0971029B

Audi Q5 8R Front Door Wiring Loom Harness Cable Driver's Side 8R0971029B

€42.95

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Part no. 3G5035953

Skoda Karoq Superb 3V USB Distributor Voltage Converter Unit Module 3G5035953

€23.95

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Part no. 8676222

BMW 3 F30 LCI Hybrid 330e Battery Starter Connecting Lead Cable Wiring 8676222

€99.95

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Part no. 3AF945093K-2

Volkswagen Passat B7 Rear Tail Light Left N/S Harness Loom Wire Cable 3AF945093K

€23.95

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Part no. 4H0907468AE

Audi A8 D4 Gateway Control Module Diagnostic Interface BUS 4H0907468AE

€89.95

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Part no. A2711508033

Mercedes W204 Engine Wiring Harness Cable Loom A2711508033

€313.95

Free delivery: Sep 16 – 17

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Part no. 9184560

BMW E65 E66 Seat Control Module Unit ECU 9134633 9184560

€85.95

Free delivery: Sep 16 – 17

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Part no. CV6Q-12A650-BJ

Ford Focus Mk3 Engine Control Unit ECU 115HP 1.6 TDCi Manual CV6Q-12A650-BJ

€232.95

Free delivery: Sep 16 – 17

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Part no. 3M5T-14A464-ZZF

Ford Focus Mk3 ABS Brake Pump Control Unit Connector Plug 3M5T-14A464-ZZF

€23.95

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Part no. AH42-14631-ACB

Land Range Rover L322 Front Door Wire Harness Loom Driver Side AH42-14631-ACB

€42.95

Free delivery: Sep 16 – 17

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Part no. 9134642

BMW E60 LCI Front Seat Control Module Unit ECU Left Right N/O/S 9134642

€51.95

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Part no. 9124585

BMW 1 3 Series E87 E90 Front Rear PDC Ultrasonic Parking Sensor Sedonarot Red

€26.95

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Peugeot Boxer Bluetooth Aerial Antenna Control Unit Module Mopar 1380701080

€47.95

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€23.95

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Mercedes C205 Pressure Sensor Wiring Loom A2055409995

€23.95

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BMW X5 F15 X5 M F85 Rear Door Wiring Harness Left Right N/O/S 9323477

€42.95

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Land Rover Range Rover L322 Dashboard Security Alarm Indicating Light 6906392

€23.95

Free delivery: Sep 16 – 17

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Audi A4 B8 2.0 TDI CNHA 190HP Quattro Engine Control ECU Kit 04L906021BH Manual

€284.95

Free delivery: Sep 16 – 17

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Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9244417

€322.95

Free delivery: Sep 16 – 17

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Audi RSQ3 F3 Boot Trunk Subwoofer Rear Bass Speaker 83A035382A

€75.95

Free delivery: Sep 16 – 17

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Part no. 07L971627F

Audi S8 D3 Wiring Harness Wire Injectors Cylinders 1-5 5.2 FSI Petrol 07L971627F

€37.95

Free delivery: Sep 16 – 17

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Part no. 8P4971693S

Audi A3 8P Rear Door Wiring Loom Harness Left Right N/O/S 8P4971693S

€23.95

Free delivery: Sep 16 – 17

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Part no. 7645837

BMW i3 I01 Electric Gearbox Gear Shifting Actuator Module Unit 7645837

€113.95

Free delivery: Sep 16 – 17

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Part no. 03L911021G

Audi A4 B8 A5 8T A6 C7 Starter Motor Actuator Bosch Diesel Engine 03L911021G

€23.95

Free delivery: Sep 16 – 17

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Part no. A6401504034-1

Mercedes W245 B200 OM640.941 140HP Engine Control ECU Kit A6401504034 Automatic

€189.95

Free delivery: Sep 16 – 17

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BMW F20 F21 F30 F31 F32 Battery Holder Bracket Supporting Rail 7612860

€23.95

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Part no. 6915327

BMW E46 E39 E60 E81 E87 E90 E91 F10 F20 F30 Relay Make Contact Sky Blue 6915327

€23.95

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Part no. 2K2941016B-1

VW Caddy Maxi 2k Headlight Lamp Front Right O/S Wire Harness Loom 2K2941016B

€23.95

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Part no. 8W1907063AG

Audi A4 B9 Body Control Comfort Unit Module BCM Unit ECU 8W1907063AG

€284.95

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Part no. 9337200

BMW 4 Series F32 F32N LCI Cable Loom Door Driver's Side Wiring Harness 9337200

€23.95

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BMW F20 F21 F30 LCI B47 Wiring Loom Harness Engine Module 8490136

€37.95

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€42.95

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BMW F10 F11 Body Control Comfort Module Unit Junction Box ECU 9353419

€23.95

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Mercedes-Benz C E Class W204 W207 Aerial Antenna Amplifier Unit A2048200089

€23.95

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€23.95

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BMW i3 I01 LCI Door Wiring Cable Loom Harness Rear Left Right N/O/S 8806980

€28.95

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BMW E64 Air Module ECU Control Unit Centre Vehicle Sensor 6955469

€47.95

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BMW F30 Hybrid 330e B48X Positive Battery Lead Cable Starter Unit Wiring 9387151

€23.95

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Ford Mondeo Mk5 Front Height Level Sensor Wiring Cable Adapter KG9T-2B392-ED

€28.95

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€23.95

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Volkswagen Tiguan Mk2 Audi RSQ3 Mk2 Battery Mount Bracket Support 5QF802631

€23.95

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€23.95

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Part no. N1BT19H406CA

Ford Puma ST CF7 Front Window Windscreen Camera Control Unit N1BT-19H406-CA

€61.95

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€275.95

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€32.95

Free delivery: Sep 16 – 17

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Mercedes W205 W213 Engine Alternator Generator M264 Petrol A0009067703

€161.95

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Part no. 02M911023S

Audi TTRS 8J VW Golf Mk6 Starter Motor Engine Bosch 2.0 TDI Diesel 02M911023S

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