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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VW Volkswagen Touareg 7P MK2 Gateway Control Unit Module ECU 7P6907530F

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Audi A4 B9 A5 F5 Power Distribution Fuse Box Battery Unit 8W0941823E

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Mercedes W212 SAM Fuse Prefuse Box Relay Junction Control Unit A2125406250

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Free delivery: Nov 12 – 13

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Mercedes W251 W906 Valve Block Air Suspension Control Unit Module A2513200158

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BMW F20 F21 F30 F34 Diesel Engine Starter Motor 30327N

€23.95

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BMW F20 F21 N47S1 Engine Wiring Harness Injector Module Loom Cable 8507918

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Free delivery: Nov 12 – 13

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Volkswagen Caddy 2K Parking Aid Sensor PDC Control Unit Module ECU 1K8919465A

€32.95

Free delivery: Nov 12 – 13

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Part no. 5NA971395

Volkswagen Tiguan 5N Door Light Wiring Harness Front Passenger Side 5NA971395

€23.95

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Part no. AM21-13404-AG-2

Ford S-Max Mk1 Rear Tail Light Lamp Wiring Cable Outer Right O/S AM21-13404-AG

€23.95

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BMW F01 F02 F03 F04 F10 F12 F13 F30 F31 F32 F34 TV Module Control Unit 9347964

€113.95

Free delivery: Nov 12 – 13

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Porsche 718 Boxster 982 Cayman 981 Parking Brake Control Unit Module 99161814505

€132.95

Free delivery: Nov 12 – 13

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Yaw Sensor Mercedes W203 W209 ESP Rotation Rate Control Unit Module A0035423918

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BMW Z4 E89 Battery B+ Engine Compartment Terminal Point 9190110

€23.95

Free delivery: Nov 12 – 13

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Part no. 99661230310

Porsche Boxster 986 Wiring Cables Harness Loom Front Left N/S 99661230310

€66.95

Free delivery: Nov 12 – 13

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Mercedes CLS W219 Door Module Rear Right O/S Control Unit A2198203626

€23.95

Free delivery: Nov 12 – 13

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Volkswagen Golf Plus 5M Aerial Antenna Boost Amplifier 5M0035577G

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Free delivery: Nov 12 – 13

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Mercedes ML W164 Cable Duct Wiring Guide Bracket Trim Right O/S A1645460461

€28.95

Free delivery: Nov 12 – 13

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Volkswagen Golf Mk8 Multimedia Sat Nav Radio Navigation Head Unit 5H0035820M

€218.95

Free delivery: Nov 12 – 13

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VW Volkswagen New Beetle Fan Control Module Relay 1J0919506K

€23.95

Free delivery: Nov 12 – 13

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Part no. 6957123

BMW 3 Series E92 Front Left N/S Door Wiring Cables Harness Loom 6957123

€23.95

Free delivery: Nov 12 – 13

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Part no. JT76-14B446-BE

Ford Transit Connect Wire Harness Loom Electric Cable Connector JT76-14B446-BE

€32.95

Free delivery: Nov 12 – 13

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Part no. 6H2214B254AAW

Land Rover Discovery 4 L319 Front Seat Position Sensor Left N/S 6H22-14B254-AAW

€28.95

Free delivery: Nov 12 – 13

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Part no. 8625068-7

Mini R61 N16 1.6 122HP Petrol Engine ECU Kit DME + CAS3 + Key 8625068

€246.95

Free delivery: Nov 12 – 13

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Part no. H1BT-18K811-HF

Ford Transit Custom Mk8 MMI Volume Radio Head Unit Control Panel H1BT-18K811-HF

€42.95

Free delivery: Nov 12 – 13

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Mercedes W167 W177 Radio Stereo Nav Navigation Head Unit High A1679005218

€450.95

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€23.95

Free delivery: Nov 12 – 13

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Mercedes-Benz A207 W207 Cabrio Control Unit Module Bracket Holder A2075451740

€23.95

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Part no. 8490050-1

BMW F70 F74 Mini F65 F66 Petrol Catalyst Differential Pressure Sensor 8490050

€42.95

Free delivery: Nov 12 – 13

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BMW F31 F31 LCI Trunk Lid Baggage Door Wire Wiring Cable Harness Loom 9289548

€56.95

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Part no. 7P6907357

Volkswagen Touareg 7P Front Lamp Headlight Range Control Module ECU 7P6907357

€23.95

Free delivery: Nov 12 – 13

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Part no. 5WA907727AC

Skoda Octavia IV Climate Air Conditioning Control Module Unit 5WA907727AC

€28.95

Free delivery: Nov 12 – 13

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Part no. 7L0941824B

Volkswagen Touareg 7L Fuse Box Module Electrical Relay Control Unit 7L0941824B

€23.95

Free delivery: Nov 12 – 13

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Part no. EH22-14Q073-AA

Land Rover Discovery 4 L319 Fuse Relay Box EH22-14Q073-AA

€23.95

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BMW X5 X6 E70 E71 Holder Bracket Actuator Unit 6772102

€23.95

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BMW F40 F48 Mini F56 Distribution Fuse Box Rear Electric Power Fuse Box 9360501

€23.95

Free delivery: Nov 12 – 13

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Range Rover Sport L494 Body Control Module Unit BCM ECU HPLA-14F392-JE

€42.95

Free delivery: Nov 12 – 13

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Audi A1 8X Headlight Headlamp Wiring Harness Cable Front Right O/S 8X0941004A

€23.95

Free delivery: Nov 12 – 13

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Part no. 7PP907064DD

Porsche Cayenne 92A Body Control Module BCM ECU 7PP907064DD

€156.95

Free delivery: Nov 12 – 13

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Part no. A2059009230

Air Conditioning Module Mercedes W205 C253 A/C Control Unit ECU A2059009230

€23.95

Free delivery: Nov 12 – 13

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Part no. A2115455232

Mercedes W211 Front Fuse Box SAM SRB Module Relay Control Unit A2115455232

€23.95

Free delivery: Nov 12 – 13

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Part no. M8E2-14F041-BB

Land Range Rover Velar L560 L461 L462 Body Control Module ECU M8E2-14F041-BB

€189.95

Free delivery: Nov 12 – 13

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Part no. A0009059300-MG

PDC Sensor Mercedes X156 Rear Parking Distance Mountain Grey Metallic - 787

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1635409108

Mercedes-Benz M ML W163 Rear Window Heater Cable Harness Wiring A1635409108

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7624621

BMW X1 F84 Starter Wiring Battery Alternator Cable Harness Loom 7624621

€32.95

Free delivery: Nov 12 – 13

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Part no. A1131533479

Mercedes W163 W211 W220 Engine Control Unit ECU 279HP S430 Automatic A1131533479

€180.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F7910401L-2

Audi A6 C6 2.7 TDI Quattro CANC 190HP Engine Module ECU Kit 4F7910401L Automatic

€336.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6794618-1

EMF Actuator BMW F10 F12 Brake Caliper Parking Brake Unit Electric 6794618

€23.95

Free delivery: Nov 12 – 13

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Part no. N8B2-19G229-AA-1

Range Rover Velar L560 Anti Theft Alarm Siren Horn Mount Bracket N8B2-19G229-AA

€23.95

Free delivery: Nov 12 – 13

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Part no. A1779061302

Mercedes EQA H243 W247 Fuse Box Relay Control Unit Module A1779061302

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

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BMW F40 F44 G20 LED Ambient Light Module Control Unit Violet 9891437

€23.95

Free delivery: Nov 12 – 13

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Part no. 99160913700

Porsche 718 Boxster 982 Front Brake Caliper Cable Harness 99160913700

€51.95

Free delivery: Nov 12 – 13

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Part no. C1B1-12A650-FK

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€56.95

Free delivery: Nov 12 – 13

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Part no. 5M0907357E

Volkswagen Touran 1T Passat B7 Headlight Control Unit Module ECU 5M0907357E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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

€85.95

Free delivery: Nov 12 – 13

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Part no. 8475125-1

BMW X1 F48 B47 190HP Engine ECU Control Unit Kit 1.5 Diesel 8475125 Automatic

€569.95

Free delivery: Nov 12 – 13

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Part no. 8P0941004AK-2

Audi A3 8P Front Lamp Headlight Halogen Wiring Looom Cable Right O/S 8P0941004AK

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BT-14B533-CA

Ford Transit Connect Mk2 Door Control Module Front Passenger Side H1BT-14B533-CA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Ford Tourneo Custom Positive Battery Terminal Cable Wire GK2T-14303-BB

€42.95

Free delivery: Nov 12 – 13

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Part no. 6950525

BMW 3 6 Series E63 E64 E93 DWA Alarm System Module Unit 65756950525 6950525

€23.95

Free delivery: Nov 12 – 13

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Part no. CK52-14301-CC

Range Rover L494 Negative Battery Cable CK52-14301-CC

€23.95

Free delivery: Nov 12 – 13

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Part no. HB3T-18C942-DA

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€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 14D179-AB

Range Rover Evoque L538 DPF Pressure Sensor Wiring Cable 14D179AB

€23.95

Free delivery: Nov 12 – 13

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Part no. A2465403505

Door Wiring Mercedes W176 W246 Front Passenger Side Cable Harness A2465403505

€23.95

Free delivery: Nov 12 – 13

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€37.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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Part no. V23134-B52-X477

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€37.95

Free delivery: Nov 12 – 13

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Part no. EB3G-12A650-GE

Ford Ranger Mk4 Engine ECU Control Unit 2.2 TDCi 161HP Automatic EB3G-12A650-GE

€251.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0971036R-1

Audi Q3 8U Door Loom Wiring Harness Cable Front Left N/S 8U0971036R

€32.95

Free delivery: Nov 12 – 13

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Ford Kuga Mk2 C520 Transfer Case Control Module ECU 1894181

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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BMW E60 Front Seat Height Adjustment Electric Motor Actuator 0390203234 8321087

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0971694G

Volkswagen Tiguan 5N Rear Door Wiring Loom Harness Right O/S 5N0971694G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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BMW F40 Crash Control Unit Air Module ECU Continental 9873895

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0945094M-1

Audi Q3 8U Rear Trunk Boot Lamp Light Wiring Loom Plug Right O/S 8U0945094M

€23.95

Free delivery: Nov 12 – 13

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Part no. 5E0971694M

Skoda Octavia Door Wiring Harness Loom Cable Rear Right O/S 5E0971694M

€23.95

Free delivery: Nov 12 – 13

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Audi A4 B8 Door Module Control Unit Module ECU Front Left N/S 8K0959792

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

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€332.95

Free delivery: Nov 12 – 13

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Part no. GJ32-14K042-BC

Range Rover Evoque L538 Centre Console Wiring Loom Harness Cable GJ32-14K042-BC

€23.95

Free delivery: Nov 12 – 13

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Range Rover Sport L494 Comfort Control Module Unit ECU K8D2-15K622-DB

€23.95

Free delivery: Nov 12 – 13

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€47.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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BMW F20 F30 BCM Body Comfort Control Module CCM Unit ECU 6819335

€28.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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Volkswagen Caddy 2K Door Wiring Harness Cable Front Left Right O/S 2K5971557C

€42.95

Free delivery: Nov 12 – 13

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Starter Cable Mercedes W205 GLC X253 Electrical Wiring Harness A2055406621

€28.95

Free delivery: Nov 12 – 13

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Engine Wiring Mini F56 F60 BMW F45 F46 Petrol Sensor Module 1 Harness 8678968

€85.95

Free delivery: Nov 12 – 13

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Porsche Cayman 718 982 Impulse Sender Control Unit Module 982907159B

€42.95

Free delivery: Nov 12 – 13

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Part no. 9P0971174E

Porsche 718 Boxster 982 Rear Bumper Parking Sensor Wiring Harness ABS 9P0971174E

€66.95

Free delivery: Nov 12 – 13

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Porsche Macan 95B Electric Parking Brake Module Control Unit 95B907801C

€23.95

Free delivery: Nov 12 – 13

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BMW F20 F30 F31 Mini F55 F56 F60 Control Unit Air Conditioning Module 7951288

€23.95

Free delivery: Nov 12 – 13

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Part no. 8K0971030AP

Audi A4 B8 Passenger Front Door Wiring Harness Loom Cabling 8K0971030AP

€23.95

Free delivery: Nov 12 – 13

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Skoda Octavia III 5E 2.0 TDI 184HP CUNA Engine Control ECU Kit 04L907309R Manual

€142.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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Part no. 03L906022RD-1

Skoda Octavia Mk2 VRS 2.0 TDI CEGA Engine ECU Kit 03L906022RD Manual

€474.95

Free delivery: Nov 12 – 13

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Part no. F1F1-12A650-SA-1

Ford Focus Mk3 1.5 TDCI XWD 120HP Engine ECU Kit F1F1-12A650-SA BCM + 2 Key

€208.95

Free delivery: Nov 12 – 13

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