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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Volkswagen Transporter T5 Golf Mk6 Radio CD Player Head Unit 7E0035156B

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€23.95

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VW Golf Mk7 5G 2.0 4motion CJXC 300HP Engine Control ECU 8V0906259F Automatic

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Free delivery: Nov 12 – 13

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Audi A5 8T Towbar Trailer Hitch Control Module Unit ECU HELLA 8K0907383E

€61.95

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Ford B-Max Fiesta Mk7 Focus Mk3 Bluetooth Control Unit Module AM5T-14D212-EB

€23.95

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Audi A5 8T Sportback Front Door Module Control Unit Driver's Side 8T0959793B

€23.95

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Audi A5 8T Body Control Comfort Unit Module BCM Convenience Unit ECU 8K0907064JE

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€23.95

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Ford Ranger Mk3 Positive Terminal HV Battery Lead Cable Wire Harness EB3T14603C

€23.95

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BMW F40 BDC Body Control Module Unit 1.5 Petrol B38A15A 5A08053

€132.95

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Volkswagen VW Golf Mk7 TailLight Rear Lamp Right O/S Harness Loom Wire 5G0945208

€23.95

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Land Rover Discovery L550 Negative Battery Cable Lead Wire FK72-14301-AB

€23.95

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Ford Transit Custom Mk8 Engine Bay Fuse Box Wire Loom 2.0 Diesel GK2T-9K499-ABC

€80.95

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Porsche Cayenne 9PA Radio Aerial Antenna Amplifier Unit Rear Left N/S 7L5035225B

€23.95

Free delivery: Nov 12 – 13

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Part no. LR032104-1

Land Rover Discovery L319 Range Rover L322 Parking Brake Actuator AH22-2C496-AF

€104.95

Free delivery: Nov 12 – 13

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Part no. 6C1T-14A073-CG

Ford Transit Mk7 Body Control Module BCM ECU Fuse Box Unit 6C1T-14A073-CG

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L5945096A-2

Porsche Cayenne 9PA Rear Tail Light Lamp Harness Loom Wire Right O/S 7L5945096A

€23.95

Free delivery: Nov 12 – 13

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BMW X3 F25 X4 F26 Door Wiring Loom Harness Cable Driver's Side 9379820

€23.95

Free delivery: Nov 12 – 13

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Part no. KK21-12A650-FA

Ford Transit Custom Mk8 Engine Control ECU Unit Kit 2.0D Manual KK21-12A650-FA

€94.95

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€23.95

Free delivery: Nov 12 – 13

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Part no. 8U0971035L

Audi Q3 8U Door Loom Wiring Harness Cable Front Right O/S 8U0971035L

€23.95

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Audi Q7 4L Rear Reversing Camera View Module Control Unit ECU 4L0910441B

€89.95

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Skoda Superb 3V BCM Body Control Module ECU 5Q0937084CN

€28.95

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€23.95

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Part no. GHCT-14A624-AJA

Land Rover Discovery Sport L550 Wire Loom Harness Connector GHCT-14A624-AJA

€23.95

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Land Rover Discovery Sport L550 Fuse Box Relay Module 2.2 Diesel FK72-14F041-AB

€85.95

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Earth Ground Cable BMW F10 N47N Diesel Battery Cable Engine Wiring 8517616

€23.95

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Mercedes W166 Door Module Rear Left N/S Control Unit ECU A1669005412

€23.95

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Volkswagen VW Caddy 2K Door Harness Loom Cable Wiring Front Left N/S 2K0971557F

€32.95

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Mercedes W168 W203 W211 Relay 6-Pin Black Tyco A0025421219

€23.95

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Mercedes GLA X156 Air Module Safety Belt Tensioner Unit Control A1179008700

€94.95

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Mercedes W207 E350 OM642.838 Engine Control Unit ECU Kit A6421508900 Automatic

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€42.95

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€47.95

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Audi A5 F5 Sportback Tailgate Bootlid Control Unit Module ECU 89A959107

€75.95

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€113.95

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Mercedes E-Class W207 Cabrio A207 ITS Camera Control Unit Module ECU

€23.95

Free delivery: Nov 12 – 13

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Part no. 8K0941824A

Audi A1 A4 A6 A7 A8 Fuse Box Connector Socket Module Unit 8K0941824A

€23.95

Free delivery: Nov 12 – 13

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Part no. DPLA-14C546-AA

Land Rover Sport L494 Seat Control Module Unit Passenger Side DPLA-14C546-AA

€23.95

Free delivery: Nov 12 – 13

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Part no. 6G92-15K866-BK

Land Rover Freelander 2 L359 PDC Parking Assist Module 6G92-15K866-BK

€42.95

Free delivery: Nov 12 – 13

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VW Touareg Phaeton Heated Seat Control Module Unit 7L0959772D

€23.95

Free delivery: Nov 12 – 13

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Part no. 4G9945093F-2

Audi A6 C7 Rear Taillight Light Lamp Lamp Harness Loom Wire Left N/S 4G9945093F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0910560J-1

Audi S4 B7 4.2 BBK Quattro 344HP Engine Module ECU Kit Key Manual 8E0910560J

€161.95

Free delivery: Nov 12 – 13

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Part no. HB3T-14303-DA

Ford Ranger T6 Mk1 Radio Suppresion Cable Wiring Harness HB3T-14303-DA

€37.95

Free delivery: Nov 12 – 13

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Part no. 02T911024JX

Audi A1 8X 1.2 TFSI CBZA Petrol Engine Starter Motor 02T911024JX

€23.95

Free delivery: Nov 12 – 13

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Part no. 9379845

BMW X3 F25 X4 F26 Door Wiring Loom Harness Cable Passenger's Side 9379834

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C906016G-1

Audi A3 8P Engine Control ECU 125HP 1.4 TSI Petrol CAXC Automatic 03C906016G Kit

€165.95

Free delivery: Nov 12 – 13

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Part no. A2055404596

Mercedes W205 Electrical Ground Line Wire Earth Cable A2055404596

€23.95

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Part no. 7P6945207-2

VW Touareg 7P Rear Tail Light Lamp Wiring Harness Cable Plug Right O/S 7P6945207

€23.95

Free delivery: Nov 12 – 13

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Part no. A9075404687-1

Mercedes W907 Battery Cable Alternator Wiring Loom Harness Cabling A9075404687

€113.95

Free delivery: Nov 12 – 13

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Land Rover Discovery 4 L319 Engine Starter Motor 3.0 Diesel CPLA-11001-BF

€56.95

Free delivery: Nov 12 – 13

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Audi Q5 Mk2 FY Negative Battery Earth Cable Terminal Lead 80A971235

€28.95

Free delivery: Nov 12 – 13

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Mercedes W204 Battery Wiring Cable Harness Loom A2045409907

€28.95

Free delivery: Nov 12 – 13

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€142.95

Free delivery: Nov 12 – 13

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Part no. K1BY-12A650-BA

Ford Fiesta Mk8 ST Engine Control Unit Module ECU 1.5 EcoBoost K1BY-12A650-BA

€32.95

Free delivery: Nov 12 – 13

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BMW E65 E66 Control Unit Front Centre Console Module 6938664

€23.95

Free delivery: Nov 12 – 13

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Part no. YIE500090

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€66.95

Free delivery: Nov 12 – 13

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€70.95

Free delivery: Nov 12 – 13

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Part no. 5P0035186B

Seat Altea Multimedia Radio CD Player Head Unit Controller 5P0035186B

€23.95

Free delivery: Nov 12 – 13

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Part no. K8D2-10723-AC

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€28.95

Free delivery: Nov 10 – 13

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€42.95

Free delivery: Nov 12 – 13

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€23.95

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€23.95

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€23.95

Free delivery: Nov 12 – 13

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€284.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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Mercedes-Benz C-Class W204 Rear Right Door O/S Control Unit Module A2048207885

€23.95

Free delivery: Nov 12 – 13

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Part no. 5K0907115K

Volkswagen Golf 5k Engine Control ECU 2.0 Petrol 235 HP 5K0907115K Automatic KIT

€759.95

Free delivery: Nov 12 – 13

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Audi TT 8J CFGB 2.0 TDI Quattro 170HP Engine ECU Kit 03L906018KP Automatic

€123.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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Audi A8 D4 Centre Console Wiring Loom Cable Harness 4H0971641E

€23.95

Free delivery: Nov 12 – 13

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€51.95

Free delivery: Nov 12 – 13

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Part no. A2074405734

Mercedes W207 Wiring Loom Harness Cable A2074405734

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Radio Player Mini F55 F56 CD Bluetooth DAB Control Unit Module 9361654

€118.95

Free delivery: Nov 12 – 13

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BMW Z4 E85 E86 Antenna Amplifier Rod Antenna Control Unit Module 9119578

€28.95

Free delivery: Nov 12 – 13

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Part no. 8E0907559H

Audi A4 B7 3.2 FSI Quattro AUK 255HP Engine Control Unit ECU 8E0907559H Manual

€208.95

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€23.95

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€70.95

Free delivery: Nov 12 – 13

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Audi Volkswagen Fuse Box Connector Socket Module Unit 8K0941824D

€23.95

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Audi Q7 4L VW Touareg MK2 3.0 TDI Diesel Starter Motor 059911024E

€47.95

Free delivery: Nov 12 – 13

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Audi A6 C6 MMI Multimedia Sat Nav Navigation Control Head Unit 4E0035652A

€56.95

Free delivery: Nov 12 – 13

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Toyota Celica T23 Engine Control Unit ECU 1ZZ-FE 1.8 140HP Manual 896612G420

€23.95

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Range Rover Sport L320 Media Player Multimedia Navigation Screen AH22-10E887-BE

€32.95

Free delivery: Nov 12 – 13

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Part no. 7L5945095A-2

Porsche Cayenne 9PA Rear Tail Light Lamp Harness Loom Wire Left N/S 7L5945095A

€23.95

Free delivery: Nov 12 – 13

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Part no. BK3T-14B446-HC

Ford Transit Mk8 Slam Panel Sensor Cable Wire Harness Cable Front BK3T-14B446-HC

€23.95

Free delivery: Nov 12 – 13

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Part no. AM5T-14D212-CB

Ford Fiesta Mk7 Focus Mk4 Bluetooth Control Module Unit ECU AM5T-14D212-CB

€23.95

Free delivery: Nov 12 – 13

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€142.95

Free delivery: Nov 12 – 13

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Part no. 8W0906259N-1

Audi A5 F5 45 TFSI DKNA 245HP Quattro Engine ECU Kit 8W0906259N Gateway + Key

€351.95

Free delivery: Nov 12 – 13

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Audi S3 8V Alternator Wiring Harness Set Three Phase 5Q0971230FA

€28.95

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€28.95

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Mercedes C118 W167 W177 W205 W213 C238 Communication Module Unit A2579006600

€222.95

Free delivery: Nov 12 – 13

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Mercedes W906 313 CDI OM651.955 129HP Engine ECU Kit A6519003203 Automatic

€389.95

Free delivery: Nov 12 – 13

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