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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Range Rover Evoque L538 Multimedia Radio CD Player Sat Nav Head CF6N-18C815-HG

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Head-Up Display Mini Cooper F54 F55 F56 F57 Hud Project Dash Screen 9335243

€189.95

Free delivery: Nov 12 – 13

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Part no. HPLA-14N030-AB

Land Rover Range Rover Mk4 L405 Rear Fuse Box Board 3.0 TDV6 HPLA-14N030-AB

€61.95

Free delivery: Nov 12 – 13

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Fuse Box Mercedes W212 Rear Relay Control Unit Electric Module SAM A2129060005

€23.95

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Part no. A2535400601

Mercedes X253 Starter Motor Wiring Harness Cable A2535400601

€28.95

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Part no. BK2T19G317BD

Ford Transit Custom Mk8 Power Inventer 12V DC To 230V AC BK2T19G317BD

€75.95

Free delivery: Nov 12 – 13

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Part no. A2124401651

Door Cable Mercedes W212 Wiring Loom Front Left N/S Passenger Side A2124401651

€23.95

Free delivery: Nov 12 – 13

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Part no. 03G906016LR

Audi A4 B7 Engine Control Unit ECU 140 HP KIT 2.0 Diesel Automatic 03G906016LR

€75.95

Free delivery: Nov 12 – 13

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Part no. 9797818

BMW X1 U11 High-Voltage Accumulator Control Unit 9797818

€203.95

Free delivery: Nov 12 – 13

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Part no. 4G8971035BG

Audi A7 4G Front Door Harness Wiring Loom Cable Driver Side 4G8971035BG

€28.95

Free delivery: Nov 12 – 13

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Part no. 8635811-1

BMW F20 F30 LCI 118i 318i B38 Engine Wiring Loom Harness Cables 8635811

€89.95

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Part no. 6819653

BMW X5 F15 Fuse Box Front Body Control Module ECU BCM Unit 6819653

€23.95

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Part no. 982907309C

Porsche 718 Boxster 982 2.0T DDPB 300HP Engine Control ECU 982907309C Automatic

€484.95

Free delivery: Nov 12 – 13

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Part no. 06M907309H-1

Audi RS5 F5 2.9 TFSI DECA Quattro 450HP Engine Unit ECU Kit 06M907309H Automatic

€788.95

Free delivery: Nov 12 – 13

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Part no. A2074401208

Mercedes W207 Parking Sensor Wiring Loom Cable Harness Rear PDC

€23.95

Free delivery: Nov 12 – 13

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Part no. 8506666-5

Mini One R56 LCI 90HP N47N Diesel Engine ECU Control Unit DDE 8506666 Manual

€89.95

Free delivery: Nov 12 – 13

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Part no. A2469008115

Mercedes W176 W246 Gearbox Transfer Case Control Module Unit ECU A2469008115

€42.95

Free delivery: Nov 12 – 13

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Part no. 8U0614109B

Audi RS Q3 8U ABS Pump Modulator Control Unit 2.5 TFSI Petrol 8U0614109B

€379.95

Free delivery: Nov 12 – 13

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Part no. MB3T-14B060-ABE-1

VW Volkswagen Amarok NF Engine Wiring Loom Harness Cable MB3T-14B060-ABE

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2518800

Ford Kuga C482 Front Collision Detection Windscreen Camera Unit LV4T-19406-CF

€85.95

Free delivery: Nov 12 – 13

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Part no. YC1U-11000-AF-2

Ford Transit Mk6 Starter Motor Engine Actuator Diesel 2.4 TDCi YC1U-11000-AC

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9178791

BMW F01 F02 F10 F11 Cable Wiring Set ARS Valve Block 9178791

€23.95

Free delivery: Nov 12 – 13

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Part no. 4E0971845

Audi A8 D3 Rear Fuse Relay Box Plate Mounting Right O/S 4E0971845

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A3AF30

BMW F40 F44 DAB Audio Receiver Module Harman Becker 5A3AF30

€108.95

Free delivery: Nov 12 – 13

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Part no. GV6T-14D599-AC

Ford Kuga Mk2 Blind Spot Control Unit Module Radar Sensor GV6T-14D599-AC

€75.95

Free delivery: Nov 12 – 13

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Part no. CV44-S023B02-AAW

Ford Kuga C520 Fuse Box Cover Panel Lid Top Housing CV44-S023B02-AAW

€23.95

Free delivery: Nov 12 – 13

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Part no. 6803169

Air Con Module BMW F20 F30 F31 Mini F55 F56 Air Conditioning A/C Unit 6803169

€23.95

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Part no. 9145172

BMW E90 E91 E92 E93 LCI Battery Bracket Lower Section Box 9145172

€23.95

Free delivery: Nov 12 – 13

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Part no. A2124402206

Mercedes W212 E250 CDI Auxiliary Battery Cable Wiring A2124402206

€23.95

Free delivery: Nov 12 – 13

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Part no. 6C1T-14A067-CB

Ford Transit Mk7 Fuse Box Relay Under Bonnet Control Module 6C1T-14A067-CB

€37.95

Free delivery: Nov 12 – 13

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Part no. 9396828

Antenna Module BMW F06 F12 F13 E63 Rear Multi-band Antenna GPS TEL Right 9396828

€28.95

Free delivery: Nov 12 – 13

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Part no. 5319357

Ford Mondeo Mk5 Centre Console Wiring Loom Harness Cable DG9T-14B560-BE

€23.95

Free delivery: Nov 12 – 13

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Part no. 8576333-3

BMW F20 F30 F32 120dX 320dX 420dX Diesel N47N 184HP ECU Kit DDE 8576333 Key FEM

€275.95

Free delivery: Nov 12 – 13

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Part no. 1709792

Ford Fiesta Mk7 Interior Fuse Relay Box BCM Junction Box Unit 8V5T-14A005-KFF

€23.95

Free delivery: Nov 12 – 13

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Audi A3 8P Engine Control Unit 150HP 2.0 FSI AXW Petrol Manual 06F906056BT

€137.95

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Part no. 5B60AF3

Mini F66 Multimedia Head Unit Cd Audio High 65125B5DDB1

€1,006.95

Free delivery: Nov 12 – 13

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Part no. 8X0971687D

Audi A1 8X Rear Door Harness Left Right N/O/S Wiring Loom Cable 8X0971687C

€23.95

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Audi A4 B9 A5 F5 Steering Column Lock Mechanism Control Unit 3Q0905861C

€23.95

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Part no. 8W8947356

Audi A5 F5 Front Door Card Panel LED Module Light Unit Wiring Harness 8W8947356

€32.95

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Part no. 9459673-1

Seat Module BMW X4 F26 F20 F30 Front Driver Side Control Unit ECU 9250421

€94.95

Free delivery: Nov 12 – 13

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Part no. 8578945-2

BMW F20 F21 F30 F31 116d 316d N47N 116HP ECU Kit DDE 8578945 Key FEM Lock Manual

€341.95

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Part no. 8W6971104A

Audi A5 F5 Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 8W6971104A

€32.95

Free delivery: Nov 12 – 13

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Part no. 7P0971235

Porsche Cayenne 92A High Voltage Wiring Harness Battery Cable 7P0971235

€23.95

Free delivery: Nov 12 – 13

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Part no. A1121510001

Mercedes W203 W211 W220 W221 Starter Motor M113 Petrol Engine A1121510001

€23.95

Free delivery: Nov 12 – 13

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Part no. A1699000200

Mercedes-Benz A B W169 W245 Front Right Door Control Unit Module A1699000200

€23.95

Free delivery: Nov 12 – 13

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Part no. 4G8971036D

Audi A7 4G Front Door Harness Wiring Loom Cable Passenger Side 4G8971036D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8584817

BMW G20 G21 G01 G02 Wiring Harness Engine Glow Plug Module 8584817

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9323417

BMW X5 F15 Door Wiring Harness Light Package Adapter Cable 9323417

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7541335-8

BMW X3 E83 M54 2.5i 192HP Engine Control Unit ECU DME 7541335 Manual

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9807756

Mini Cooper R60 Wiring Passenger Loom Front Door Cables Left N/S 9807756

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BM5T-15K866-AN

Ford C-Max Mk2 PDC Parking Sensor Control Unit Module BM5T-15K866-AN

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0971537AG

Volkswagen Polo GTI AW1 Battery Cable Grounding Line Wiring Harness 2Q0971537AG

€37.95

Free delivery: Nov 12 – 13

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Part no. 6956748

BMW E87 E90 E91 LCI PDC Ultrasonic Parking Sensor Tiefgruen Green A43 6956748

€23.95

Free delivery: Nov 12 – 13

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Part no. GV41-13405-DD-2

Ford Kuga C520 Tail Light Rear Lamp Harness Loom Wire Left N/S GV41-13405-DD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2711538579

Mercedes R171 SLK 200 163HP 271.944 Kompressor Engine ECU A2711538579 Manual

€113.95

Free delivery: Nov 12 – 13

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Part no. 8966105C00

Toyota Avensis T270 147HP Engine Control ECU Unit 1.8 2ZRFAE Manual 8966105C00

€23.95

Free delivery: Nov 12 – 13

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Part no. A6519000603-3

Mercedes W205 C205 OM651.921 170HP Engine Control ECU Kit A6519000603 Manual

€332.95

Free delivery: Nov 12 – 13

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Part no. CX23-11001-AC

Jaguar XF X250 Starter Motor Denso 2.2 Diesel Engine 224DT CX23-11001-AC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8971365K

Audi A6 C7 Seat Belt Wiring Harness Warning System Left Right N/O/S 4G8971365K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR014265

Land Rover Discovery 4 L319 Fuse Box Fusebox Fuse Panel Cover LR014265

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6942551

BMW E87 E90 E91 Front Left N/S Seat Lordosis Pad Adapter Lead Wiring

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971349DH

Volkswagen Caddy Maxi 2C Alternator Wiring Harness Loom 1.6 TDI CAYD 1K0971349DH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CWE100860

Land Rover Freelander L314 Car Key Lucas 3TXB Key Remote FOB Key CWE100860

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9232164

BMW X3 F25 Gateway Control Module Unit ECU 9232164

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8485064

BMW G20 LCI Starter Motor Positive Battery Cable B48B20A Petrol 8485064G20

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2044402701

Mercedes W204 Dynamic Suspension Damper Shock Absorber Module ECU A2044402701

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M1959593D

Audi A6 C8 Door Control Module Unit ECU Front Driver's Side 4M1959593D

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971679B

Audi A4 B8 Glove Box Passenger Air Module Switch Wiring Harness Cable 8K0971679B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GOLF-5K-SCREEN-2

VW Golf Mk5 Mk6 Passat B6 B7 Car Radio Display MMI Multimedia Touch Screen 7"

€237.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. A0035421019-1

Mercedes C117 GLA X156 ML W166 W176 W246 Relay 5 Pins Yellow Set A0035421019

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JPLA-13E758-AA

Range Rover Sport L494 Door Harness Wire Front Left Right N/O/S JPLA-13E758-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6938226

BMW 3 Series E90 E91 Cable Wiring Loom Rear Door Left Right 61126938226 6938249

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9428830

Mini F60 Lci Wiring Harness Control Unit Automatic Transmission GA6F21AW 9428830

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005463704

Mercedes C118 Positive Pole Battery Insulating Cap Cover Trim A0005463704

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GK3T-9K499-FBC

Ford Transit Mk8 Engine Bay Fuse Box Wiring Loom Harness 2.0 GK3T-9K499-FBC

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9315130

Door Wiring Harness BMW F25 Rear Left Right Door N/O/S Wiring Loom 9315130

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2075402013

Door Cable Mercedes W212 Wiring Loom Front Left Right Door N/O/S A2075402013

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7PP907530Q

Porsche Cayenne 92A Gateway Control Module Unit 7PP907530Q

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2044402232

Mercedes W204 W207 Battery Cable Positive Wiring Harness Loom A2044402232

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Body Domain Controller Mini F54 F55 F56 F60 ECU BDC Control Unit Module 9383683

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8571042

BMW X5 F15 Engine Wiring Harness Loom Wire Connector Cable 8571042

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

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BMW F40 F44 Seat Occupancy Mat Control Unit Sensor 7948144

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0959655B

Audi A6 C6 Air Module Control Unit ECU Module 4F0959655B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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BMW E81 E87 E90 E91 E92 6-disc CD Changer without Magazine 9143439

€37.95

Free delivery: Nov 12 – 13

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Part no. 7P6971121H

VW Volkswagen Touareg 7P Door Wiring Loom Harness Front Left N/S 7P6971121C

€28.95

Free delivery: Nov 12 – 13

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Audi A4 B8 A5 8T Audio Amplifier Sound Booster Control Unit Module 8T0035223L

€185.95

Free delivery: Nov 12 – 13

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BMW 1 2 Series F20 F21 F22 Rear Bumper PDC Ultrasonic Sensor Glacier Silver

€23.95

Free delivery: Nov 12 – 13

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BMW F44 Gran Coupe Antenna Amplifier Suppresion Filter 6839355

€23.95

Free delivery: Nov 12 – 13

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BMW X6 E71 Wiring Set Wash Water Container Cable Loom 9184810

€23.95

Free delivery: Nov 12 – 13

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Head Unit Mini F55 F56 BMW F45 i3 I01 Radio DAB Media Player Unit 9362351

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 094290

BMW E87 E90 Media Player Infotainment Multimedia System Navigation Screen 094290

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Audi A8 D3 Vehicle Location Tracking Control Module Unit 4E0907440

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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BMW F40 F44 Steering Column Lock Control Module 6899320

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q4959593N

Audi A1 GB VW Crafter SY Door Control Module Front Driver's Side 5Q4959593N

€28.95

Free delivery: Nov 12 – 13

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Part no. 2002160

Ford Focus Mk3 III Negative Minus Ground Battery Terminal Cable F1FT-14324-DAC

€23.95

Free delivery: Nov 12 – 13

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Part no. 7075944-3

BMW E60 E65 E70 Front Right Seat O/S Height Adjustment Drive 7075944

€23.95

Free delivery: Nov 12 – 13

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Part no. 95B035225A-1

Porsche Macan 95B Aerial Antenna Amplifier Unit Module 2.0 TFSI 95B035225A

€23.95

Free delivery: Nov 12 – 13

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Audi A3 8V A1 S1 8X VW Jetta A6 Golf 5G Golf R 5G Petrol Alternator 04C903023M

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8574372-2

BMW F30 F32 330d 430d N57N Engine Control Unit ECU Kit DDE 8574372 Automatic

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

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