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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Ford Focus Mk3 Seat Air Module Sensor Front Passenger Side BM51-A625B02-AC

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V4971035DN

Audi A3 8V 5Dr Door Card Wiring Harness Cable Loom Driver's Side 8V4971035DN

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CV1T-14B533-AG

Ford Fiesta Mk7 Front Door Module Control Unit ECU Passegner Side CV1T-14B533-AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AM51-10A659-BC

Ford Focus Mk3 Battery Tray Cover Lid Top Housing Covering AM51-10A659-BC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH2210300AB

Land Rover Range Sport L320 Diesel Engine Alternator Generator AH22-10300-AB

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AM51-10A659-BB

Ford Focus Mk3 Battery Cover Panel Trim Plastic Black AM51-10A659-BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9098702027-1

Toyota Celica T23 Avensis T270 Fuel Lid Release Relay 4-Pin Blue 12V 9098702027

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4042409

Ford Transit Mk6 Door Central Lock Locking Control Unit Module 1C1T-15K600-BA

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K5945096B-2

Audi A4 B8 Tail Light Lamp Rear Right O/S Harness Loom Wire Connector 8K5945096B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9340989

BMW F21 F22 F23 Door Wiring Loom Harness Front Driver's Side 9340968

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DV61-12A650-BBB

Ford Focus Mk3 Engine Control Unit ECU 105HP 1.6 Petrol Manual DV61-12A650-BBB

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6059035

BMW F10 F11 F20 F21 F30 F31 Hands Free Telephone Microphone Unit 9263744

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GJ32-14D619-BA

Land Rover Discovery Sport L550 Door Module Rear Passenger Side GJ32-14D619-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK7214B006AA

Jaguar XF X260 XE X760 F-Pace X761 Air Module Crash Impact Sensor FK7214B006AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0035225N

Audi A8L 4H Antenna Aerial Amplifier 4H0035225N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LHD-8Y4959760

Audi A3 S3 8Y Seat Control Unit Module ECU Left N/S 8Y4959760

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GK52-18808-AB

Range Rover L405 Boot Subwoofer Speaker Panel Cover Module Unit GK52-18808-AB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9185534

BMW E81 E82 E87 E88 F20 Radio Player Navigation Head Unit Control Module 9185534

€256.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DG9T-14633-GCG

Ford Mondeo Mk5 Door Wiring Harness Loom Cable Rear Left N/S DG9T-14633-GCG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6S6Y-14401-NDF

Ford Fiesta St Mk5 Fuse Box Relay Box Module 2.0 DURATEC ST150 6S6Y-14401-NDF

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6421503972-1

Mercedes C219 CLS 320 642.920 224HP Engine Unit ECU Kit A6421503972 Key Lock

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HPLA-9137-BD

Land Rover Range Rover Sport L494 Steering Wheel Airbag Wiring Loom HPLA-9137-BD

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009060803

Alternator Mercedes W176 C117 X156 X117 Petrol Engine Generator A0009060803

€118.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8379766

BMW E65 E90 E91 E92 E93 Auto Boot Release Switch Tailgate 8379766

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DPLA-14F70-BB

Range Rover L405 L494 Power Distribution Control Unit Module DPLA-14F70-BB

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M8E2-14D600-AC

Range Rover Velar L560 Front Seat Module ECU Left Right N/O/S M8E2-14D600-AC

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7PP035730B

Porsche Cayenne 92A Multimedia Music Navi CD Radio Player Head Unit 7PP035730B

€507.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6933270

BMW 7 Series E65 E66 E67 Control Unit Door Rear Driver Side 6933270

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1765400103

Battery Cable Mercedes C117 W176 Starter Alternator Wiring Harness A1765400103

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0971366M

Audi A8 D4 Seat Frame Wiring Harness Front Left N/S 4H0971366M

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6942550

BMW E90 Front Seat Wire Cable Harness Wiring Loom 6942550

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9341546

BMW F40 G20 G30 Accelerating Sensor 9341546

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8720310

Telematics Module Mini F54 F55 F56 F60 Bluetooth Control Unit ECU 8720310

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BG9T-15K867-SC

Ford Mondeo Mk4 Front Bumper Parking Sensor Wiring Loom Harness BG9T-15K867-SC

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0919275S-BLK1

Audi TT 8J PDC Parking Assist Distance Sensor Control 3C0919275S Black

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GOLF-5K-SCREEN-3

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

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775402111

Mercedes W177 Door Harness Loom Cable Wiring Rear Left Right N/O/S A1775402111

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0959595G

Audi A4 B9 Rear Door Control Module Unit ECU Left Right N/O/S 8W0959595G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BV6T-14E073-BAC

Ford Focus Mk3 Front Door Light Wiring Loom Harness Right O/S BV6T-14E073-BAC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6929556

BMW E65 E66 Driver's Seat Air Module Sensor Control Unit Module 6929556

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7790996

Mini One D R50 W17 Base B+ Battery Terminal Point Engine Compartment 7790996

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7789754

BMW E60 E61 Starter Motor Positive Battery Cable Wiring 7789754

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1768200704

Sunroof Wiring Mercedes C117 W176 Panoramic Motor Cable Harness A1768200704

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G6867657

Volkswagen Golf 5G Mk7 Rear Lamp Light Bulb Cover Left N/S 5G6867657

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907731

Audi A4 B8 A5 8T Air Module ECU Control Unit Crash Sensor 8K0907731

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T8971687S

Audi A5 S5 8T Door Wiring Loom Harness Cable Rear Left N/S 8T8971687S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059061457-3

Mercedes W205 Rear Lamp LED Taillight Right O/S Wire Harness Loom A2059061457

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CK52-14632-AE

Range Rover L405 Door Wiring Loom Harness Cable Rear Right O/S CK52-14632-AE

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CPLA-19G490-AE

Range Rover L405 Camera Module Rear View Parking Camera Unit CPLA-19G490-AE

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CNTG50-SCREEN

Car Multimedia Video Player Screen Display 4G GPS Module Unit

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GN15-12A650-LB

Ford Fiesta Mk8 Engine Control Module ECU Kit 1.0 Petrol 100HP GN15-12A650-LB

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9341014

BMW F21 F22 F23 Front Door Wiring Loom Harness Passenger Side 9340993

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8273002120A

Toyota Auris E15 Fuse Box Control Unit 8273002120A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8D0973822

Audi Q3 F3 Flat Connector Lid Lock Connector Micro Switch Wire Bonnet 8D0973822

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0971502AJ

Audi A7 4G Fuse Box Control Unit Strap Holder Mount Bracket 4G0971502AJ

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5B7AB39

BMW F74 Under Floor Base Subwoofer Bass Central Speaker Cover Left N/S 5B7AB39

€213.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GK52-14E108-AA

Range Rover L405 Rear Tailgate Gesture Sensor Bracket Holder GK52-14E108-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK3T-14335-BB

Ford Transit MK8 Interior Reading Roof Light Wiring Cable Adapter BK3T-14335-BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139005628

Mercedes W205 W213 Ignition Central Lock Control Unit Module ECU A2139005628

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0971250P

Audi S3 8V Battery Wire Cable Negative Earth Lead 95Q0971250P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A57781-1

BMW F40 M135i B48 306HP Engine Unit ECU KIT DME 5A57781 BDC Key Automatic

€322.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6981142

Window Lifter Motor BMW E60 E61 Drive Actuator Front Right O/S 6981142

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9131734

BMW E81 E82 E88 E92 Passenger Seat Wiring Memory Loom Harness Cable 9131732

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9855635

BMW F70 F74 U06 X2 U10 X1 U11 Battery Tray Pad Support Holder 9855635

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2535407830

Mercedes C253 AMG Rear Bumper PDC Wiring Parking Sensor Loom Harness A2535407830

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1718701410

Mercedes SLK R171 Alarm Anti Theft System Control Module Unit Roof A1718701410

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005405624

Fan Wiring Mercedes W639 W906 Heater Blower Unit Motor Cable Harness A0005405624

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055402750

Mercedes W205 C253 Hybrid Fuse Control Unit Module Distribution Box A2055402750

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9218261

Mini Clubman R55 Clubdoor Cable Wiring Loom Harness Set 9154133

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DT11-13C148-AC

Ford Transit Connect Headlight Control Unit Module ECU DT11-13C148-AC

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 52233129

Vauxhall Movano C AdBlue Injection Wiring Harness Cable 2.2 BlueHDI 52233129

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C8971694DM

Volkswagen Passat CC Rear Door Wiring Harness Cable Right O/S 3C8971694DM

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 259152334R

Smart Fortwo Forfour 453 Sat Nav Multi Media Display Screen 259152334R

€279.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1639320314

Mercedes W163 Fuel Tank Filler Flap Cover Cap A1639320314

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JU5T-15604-CFM

Ford Mondeo MK5 Body Control Module BCM Fuse Box Control Unit JU5T-15604-CFM

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2185404607

Mercedes CLS W218 Rear Door Harness Loom Wiring Left Right N/O/S A2185404607

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6951855

BMW 6 E64 E64N LCI Convertible Suppression Filter Aerial Module Antenna 6951855

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0941817B

Audi A6 A8 D4 Q7 4M CAN Bus Jumper Contact Bridge Connector Plug 4E0941817B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HU5T-15K866-AG

Ford Fiesta St Mk8 Parking Distance Aid System Control Module HU5T-15K866-AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA915343B

Battery Bracket VW Golf 8 CD1 Audi A3 8Y Battery Clamp Holder 5WA915343B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055409240

Mercedes W205 Front Door Electric Wiring Harness Loom Cable Left N/S A2055409240

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. P1WA-7P238-GA

VW Amarok Mk2 Transfer Case Box Control Unit Module ECU ECU P1WA-7P238-GA

€222.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CV6T-14B079-NGC

Ford Kuga C520 Interior Centre Console Wiring Loom Harness Cable CV6T-14B079-NGC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T8971688S

Audi A5 S5 8T Door Wiring Loom Harness Cable Rear Right O/S 8T8971688S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99761010611

Porsce Cayman 987c Front Boot Module Control Unit ECU 99761010611

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AA907275D

Volkswagen Passat B7 Tyre Pressure Control Unit Sensor Module 3AA907275D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7796637-1

BMW 5 Series E60 E61 530d M57N 218HP ECU Kit DDE 7796637 + CAS2 + Key Automatic

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055400555

Mercedes W205 Door Electrical Wiring Harness Front Left N/S A2055400555

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0971225K

Audi A6 C7 Positive Battery Cable Wiring Kit Harness Loom 4G0971225K

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V5945095-2

Audi A3 8V Sedan Tail Light Lamp Taillight Rear Left N/S Harness Loom 8V5945095

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8965002400

Toyota Auris E15 Power Steering Control Unit ECU 1.6 Petrol 8965002400

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L0971225H

Volkswagen Touareg 7L Audi Q7 4L Battery Positive Cable Terminal 7L0971225H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR074182

Land Rover DISCOVERY SPORT L550 Rear Parking Sensor Wiring Harness GK7215B484EC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9224869

BMW F10 F11 F12 F13 Rear Bang&Olufsen Mid Range Speaker Left Right N/O/S 9224869

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LK72-14A104-BA

Land Rover Discovery Sport L550 Air Con Module Wiring Loom A/C LK72-14A104-BA

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7526784-3

BMW E92 ECU Engine Control Unit Module 3.0 306Hp Petrol Automatic 7526784

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0919275-PHB1

Audi Q5 8R A5 8T TT 8J PDC Parking Sensor SET X2 Phantom Black - Z9Y 4H0919275

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W1959595

Audi Q5 FY Rear Door Control Module Unit Left Right N/O/S 8W1959595

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8Y0971687BG

Audi S3 8Y Door Wiring Harness Loom Electric Wire Rear Left N/S 8Y0971687BG

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

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