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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Porsche 718 Cayman S 982c Front Door Speaker Module Left Right N/O/S 7PP035454N

€42.95

Free delivery: Nov 12 – 13

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Mercedes CLS C219 Rear Lamp Tail Light Wiring Cable Left N/S A2198200764

€23.95

Free delivery: Nov 12 – 13

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Part no. 1P0971095C

Seat Leon Cupra 1P Front Bumper PDC Sensor Wire Harness Loom 1P0971095C

€32.95

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Part no. XUE000030

Range Rover L322 Radio Antenna Amplifier Suppression Module Unit XUE000030

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DG93-10723-AE

Ford Mondeo Mk5 Battery Tray Box Cover Panel 2.0 TDCi DG93-10723-AE

€23.95

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Part no. 167859

BMW X5 Series E53 Widescreen Motorway and Trunk Road Unit Module 167859

€23.95

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Part no. GJ32-15B484-AC

Range Rover Evoque L538 Rear Parking Sensor Wiring Loom GJ32-15B484-AC

€37.95

Free delivery: Nov 12 – 13

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Part no. A2709002100-15

Mercedes C117 CLA 180 270.910 122HP Engine ECU Kit A2709002100 Automatic

€503.95

Free delivery: Nov 12 – 13

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Part no. A0035453501

Mercedes Vaneo W414 Sprinter W901 W902 W903 Fuse Box Battery A0035453501

€23.95

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Part no. A2125406805

Mercedes W212 Door Wiring Cable Front Right O/S A2125406805

€23.95

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Part no. 8798221

BMW F45 F46 6,5" Display Screen Central Information Navigation Monitor 8798221

€127.95

Free delivery: Nov 12 – 13

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Part no. A2048204326

Mercedes W204 Interior Roof Cabin Light Panel Sensor Control Unit A2048204326

€94.95

Free delivery: Nov 12 – 13

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Part no. 9797877

BMW X1 U11 High-Voltage Battery Module Connector Unit 9797877

€56.95

Free delivery: Nov 12 – 13

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Part no. 3456498

Harness Door Mini R57 LCI R58 R59 Cable Loom Front Passenger Side Wiring 3456498

€28.95

Free delivery: Nov 12 – 13

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Part no. 5G6035577J

VW Volkswagen Golf GTI MK7 Roof Antenna Amplifier AM/FM/TV Right O/S 5G6035577J

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4539000106

Smart A453 Fortwo Electronics Module Control Unit A4539000106

€66.95

Free delivery: Nov 12 – 13

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Part no. 9316000

BMW X5 F15 Wiring Holder Electrical Cable Loom Cover Tunnel 40eX Hybrid 9316000

€23.95

Free delivery: Nov 12 – 13

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Part no. 98661208300

Porsche Boxster 986 Rear Screen Window Heated Wiring Harness Cable 98661208300

€23.95

Free delivery: Nov 12 – 13

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Part no. 8J0971030K

Audi TT Mk2 8J Front Door Wiring Loom Harness Passenger Side 8J0971030K

€28.95

Free delivery: Nov 12 – 13

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Part no. A6421508900-12

Mercedes V251 Engine Control ECU 3.0 CDI 265HP R350 A6421508900 KIT Automatic

€379.95

Free delivery: Nov 12 – 13

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Part no. 9174271

BMW F10 LCI Bluetooth Control Unit Module Bracket Holder Mount 9174271

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0959792P

Audi A6 C6 Front Door Lock Control Module Unit ECU Passenger Side 4F0959792P

€23.95

Free delivery: Nov 12 – 13

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Part no. 1K0937125A-1

Audi A3 8P SE Engine Bay Fuse Relay Box Power Management 1K0937125A

€23.95

Free delivery: Nov 12 – 13

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Part no. 7643895

BMW F15 F16 Negative Battery Ground Minus Earth Cable Harness 7643896

€23.95

Free delivery: Nov 12 – 13

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Part no. C1BT-14B321-FF

Ford Fiesta Mk7 3Dr Air Module ECU Control Unit C1BT-14B321-FF

€23.95

Free delivery: Nov 12 – 13

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Part no. GJ5T-14B673-AH

Ford Kuga C520 Trunk Powered Tailgate Control Module Unit ECU GJ5T-14B673-AH

€47.95

Free delivery: Nov 12 – 13

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Part no. 7472228-2

Mini F55 F56 F57 Headlight Lamp Light LED Right O/S Harness Loom Wire 7472228

€23.95

Free delivery: Nov 12 – 13

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Part no. 7P0937132

VW Volkswagen Touareg 7P Fuse Box Control Unit Cover Trim Panel 7P0937132

€23.95

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Part no. 059971341E

Audi Q7 4L 3.0 TDI V6 Diesel Engine Cable Wiring Duct Channel Cover 059971341E

€23.95

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Part no. A2053401800

Mercedes W205 Pipe Line Piping Side Battery A2053401800

€23.95

Free delivery: Nov 12 – 13

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Part no. 8865042130

Toyota Rav4 Mk2 Air Conditionong Amplifier Control Module ECU 8865042130

€23.95

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Part no. 9120731

BMW E63 E64 Amplifier Holder Catch Bracket Video Module 9120731

€23.95

Free delivery: Nov 12 – 13

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Part no. A2049005503

Mercedes C207 Complete Damper Adjustment Control Module ECU A2049005503

€70.95

Free delivery: Nov 12 – 13

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Part no. 5Q0937132B

Skoda Superb Mk3 3V Fuse Box Lid Cover Trim Upper Panel 5Q0937132B

€23.95

Free delivery: Nov 12 – 13

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Part no. 5A81BC5

BMW F74 Rear Door Wiring Loom Harness Cable Left Right N/O/S 5A81BC5

€32.95

Free delivery: Nov 12 – 13

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Part no. 80A971228AG

Audi Q5 MK2 FY 40TDI 2.0 Diesel Alternator Starter Wiring Loom 80A971228AG

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2040560

Ford Transit Connect Mk2 HV Battery Cable Loom Harness Wiring 2040560

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. XUO000040

Range Rover L322 Radio Aerial Amplifier Module Control Unit XUO000040

€23.95

Free delivery: Nov 12 – 13

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Part no. HPLA-10307-BA

Range Rover Sport L494 Negative Battery Wiring Loom Harness Cable HPLA-10307-BA

€23.95

Free delivery: Nov 12 – 13

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Part no. 7896848

BMW 5 Series E60 M5 Battery holder Hold Down Strap Bracket 7896848 6938434

€23.95

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Part no. 4M0959593N

Audi Q7 4M Front Door Control Module Unit ECU Driver's Side 4M0959593N

€56.95

Free delivery: Nov 12 – 13

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Part no. KK3T-9K499-FCC

Ford Transit Mk8 Exhaust Emission Wiring Loom Harness KK3T-9K499-FCC

€165.95

Free delivery: Nov 12 – 13

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Part no. 8849403

BMW U06 X1 U11Battery Air Guide Plate Cover Trim Housing 8849403

€23.95

Free delivery: Nov 12 – 13

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Part no. A1679009011

Mercedes W205 C213 X253 Rear Door Control Module Unit ECU Left N/S A1679009011

€42.95

Free delivery: Nov 12 – 13

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Part no. A1728200526

Mercedes R172 SLK Air Module SRS Control Unit ECU A1728200526

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2046190048

Mercedes-Benz C W204 Rear Battery Support Holder Mount Bracket A2046190048

€23.95

Free delivery: Nov 12 – 13

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Part no. 503446570201

Vauxhall Movano C BCM BCM Body Control Module Fuse Box Unit 503446570201

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1698207126

Door Module Mercedes W169 W245 Front Left N/S Control Unit A1698207126

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C8971121BN

VW Volkswagen Passat CC Wiring Harness Cable Front Passenger Side 3C8971121BN

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1569005100

Mercedes C204 C63 AMG Engine ECU 156.985 487HP Key Lock Set Auto A1569005100

€854.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4159007503

Mercedes Citan W415 Body Control Module Unit BCM ECU A4159007503 284B18276R

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049004406

Mercedes W204 Radio Stereo CD Player Head Unit A2049004406

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1J0803219

Skoda Octavia II Battery Bracket Battery Clamp Holder Mounting 1J0803219

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9A260703702

Porsche 718 Boxster 982 Battery Earth Ground Cable Negative 2.0 9A260703702

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F1971693D

Audi A6 C6 Rear Door Wiring Left Right N/O/S Harness Loom Cable 4F1971693D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2125406105

Mercedes W212 Rear LED Wiring Cable Harness Loom A2125406105

€23.95

Free delivery: Nov 12 – 13

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Part no. 7N0971557

Volkswagen Sharan 7N Front Door Wiring Loom Cable Harness Driver Side 7N0971557

€23.95

Free delivery: Nov 12 – 13

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Part no. 8K0971029M

Audi A4 B8 Door Wiring Harness Loom Front Cabling 8K0971029M

€23.95

Free delivery: Nov 12 – 13

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Part no. 8626762-1

BMW F20 M435i N55 326HP Engine Control Unit ECU DME 8626762 Automatic

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8573260-11

BMW F20 F21 116d ed Diesel N47N 116HP ECU Kit DDE 8573260 + Key + FEM Manual

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519007500-18

Mercedes W212 E220 CDI 651.924 170HP Engine Unit ECU Kit A6519007500 Automatic

€313.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8674265

BMW F20 F30 LCI 118i 318i B38A15A 136HP Engine Unit ECU DME 8674265 Manual

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059911024H-1

Audi Q7 4L Engine Starter Motor Actuator 3.0 TDI Quattro 0 986 024 050

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR028513-2

Range Rover L322 Tail Light Lamp LED Taillight Wiring Rear Right O/S LR028513

€23.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. CA6T-14B526-DC

Ford Fiesta Mk7 Start Stop Engine Module Control Unit ECU CA6T-14B526-DC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. VP7EKX-13K198-AB

Ford Fiesta MK7 Front Headlight Adjustment Motor Range Control VP7EKX-13K198-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AG9T-14324-UC

Battery Cable Ford S-Max Negative Lead Wiring Harness Cable AG9T-14324-UC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. YIB-500040

Range Rover L322 Satelite Navigation GPS Navigation System Unit Module YIB500040

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EK2T-14B428-RB-1

Ford Transit Mk8 Bluetooth Multimedia Control Module Unit ECU EK2T-14B428-RB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C2Z29262

Jaguar XF X250 Engine Control Unit ECU 2.2 Diesel 163HP Automatic EX23-12C520-VA

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5B56F91

Mini F66 Camera Parking Control Unit 5B56F91

€365.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6796905

BMW F01 F01N F02 F10 AHK Towing Hitch Tow Bar Control Module Unit ECU 6796905

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8971036H

Audi A7 4G Front Door Wiring Loom Harness Passenger Side 4G8971036H

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1P0907159

Seat Leon Cupra 1P Mk2 Engine Sound Control Unit Module ECU 1P0907159

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018BB

Volkswagen Golf GTD Mk6 2.0 TDI CFGB Engine Control ECU 03L906018BB Manual

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KK62-14N276-AE

Range Rover Sport L494 Battery Cable Wiring Loom Harness KK62-14N276-AE

€51.95

Free delivery: Nov 12 – 13

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Part no. GK2T-14B144-GA

Ford Transit Custom Mk8 Fuse Loom Junction Box Housing Bracket GK2T-14B144-GA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7N0907441B

Seat Alhambra 7N VW Sharan 7n Reversing Camera Control Module ECU 7N0907441B

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5QA971228G

VW Volkswagen Tiguan Mk2 Touran Mk3 Positive Battery Cable Lead 5QA971228G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1Z0971161G

Skoda Octavia Mk2 Rear Door Wiring Harness Cable Right O/S 1Z0971161G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DH22-14B192-AA-1

Range Rover Velar L560 Fuse Relay 4-Pin 20A 12V Unit Set X2 DH22-14B192-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7640004-4

Mini Cooper R56 Engine N12 1.6 120HP Petrol ECU Kit DME 7640004 CAS3 + 2 Keys

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9286024

BMW F01 F02 TV Tuner Control Unit Module ECU 9286024

€156.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9367813

Mini F55 F56 Fuse Box Distribution Board Map Diagram Fuse Grouping 9367813

€23.95

Free delivery: Nov 12 – 13

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Part no. M8D2-14C568-FB

Land Rover L550 Engine Control ECU 1.5 Petrol 269HP Automatic M8D2-14C568-FB

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 51794156-2

Fiat Panda Mk2 Headlight Headlamp Wiring Harness Cable Plug Left N/S 51794156

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. YC1F-12B523-AC

Ford Transit Mk7 Engine Control Unit ECU 125HP 2.0 Diesel 1701860 F3FA 3.903.856

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9665162580

Peugeot Partner Citroen Berlingo 1.6 HDI Engine Wiring Cable Bracket 9665162580

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04E0919064

Audi A8 D3 Door Lightning Module Control Unit Front Rear 04E0919064

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2569987

Ford Transit Connect Mk2 EcoBlue Diesel 1.5 Wiring Harness Cable Loom 2569987

€23.95

Free delivery: Nov 12 – 13

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Part no. 8W83-14B296-AC

Jaguar XK XKR X150 XF X250 ESP Yaw Rate Sensor Module Unit 8W83-14B296-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0971036

Audi A8 D3 Front Door Wiring Loom Harness Cable Passenger Side N/S 4E0971036

€23.95

Free delivery: Nov 12 – 13

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Part no. 9289582-1

BMW X1 E84 Display Screen Monitor On-Board CID TV Navigation System 8,8" 9289582

€146.95

Free delivery: Nov 12 – 13

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Part no. K8D2-14N030-AC

Land Rover Discovery Sport L550 Evoque L551 Fuse Box 2.0 Diesel K8D2-14N030-AC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2188246

Ford Transit Custom Rear Bumper PDC Cables Wiring Loom Harness JK2T-15K868-AB

€42.95

Free delivery: Nov 12 – 13

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Part no. FW93-12C520-PAD

Range Rover Sport L494 3.0D 306HP Engine Control Unit ECU FW93-12C520-PAD

€237.95

Free delivery: Nov 12 – 13

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Part no. 8X0919475AL

Audi A1 S1 8X PDC Parking Assistance Control Module Unit ECU 8X0919475AL

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8272142040

Toyota Rav4 Mk2 Junction Block Fuse Relay Box Fusebox 2.0 Petrol 8272142040

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8035225G

Audi A6 C7 Avant Antenna Amplifier Upper Right O/S 4G8035225G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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