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 Passat B7 Tyre Pressure Control Module TPMS 3AA907273B

€184.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6825541

BMW F20 F21 F22 F30 F32 Front Electronic Module Control Unit FEM 6825541

€70.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009002201

Mercedes R172 W204 W212 C218 Fuel Pump Module Control Unit A0009002201

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7110854

BMW Z4 Series E85 Roadster Head Lamp Cleaning Device Container 7110854

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2Q0980653H

Seat Ibiza KJ1 VW Polo MK6 Front Camera Lane Assist Control Unit 2Q0980653H

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0955559M

Volkswagen VW Golf Mk5 Rain Sensor Windscreen Control Unit Module 1K0955559M

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0955559AB

Volkswagen Golf Mk5 Rain Sensor Front Windscreen Control Unit Module 1K0955559AB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7LA937550A

VW Transporter T6 Fusebox Module Power Distribution Control Module 7LA937550A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G0907637H

Audi A6 C7 ESP Yaw Rate Module Control Unit Sensor ECU 4G0907637H

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2128270228-SEL

Mercedes W212 Roof Antenna Amplifier Shark Selenite Grey - 992 A2128270228

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 81A955559A

Volkswagen Audi Skoda Windscreen Rain Sensor Control Unit 81A955559A

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P5971693F

Porsche Cayenne 92A Wiring Loom Harness Cable 7P5971693F

€80.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR014002-2

Land Rover Discovery 4 L319 Rear Taillight Lamp Wiring Cable Right O/S LR014002

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06L971627M

Audi Audi Q5 FY 2.0 TFSI QUATTRO Petrol Fuel Injectors Wiring Harness 06L971627M

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8X0971035BG

Audi A1 8X Front Door Loom Wiring Harness Cable Driver's Side O/S 8X0971035BE

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5A656B3

BMW G20 Air Module Control Unit SRS ECU 5A656B3

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0971250AM

Volkswagen VW Scirocco Mk3 Negative Battery Terminal Cable Wiring 1K0971250AM

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6960225

BMW E65 E66 E67 Sensor Vehicle Centre Air Control Unit Module 6960225

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6Y6945111C-1

Skoda Fabia MK1 6Y Rear Tail Light Lamp Wiring Harness Cable Left N/S 6Y6945111C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 0AD927755L

Volkswagen Touareg 7L Transfer Box Control Unit Module ECU Automatic 0AD927755L

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6956750

BMW E87 Control Unit PDC Parking Sensor Module Nautikblau Blue - A21 6956750

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6825519

BMW X2 F39 F45 X1 F48 High Voltage Cable Cover Duct Bracket Channel 6825519

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR069740

Range Rover Evoque L538 Rear Tailgate Camera Unit Bracket Panel LR069740

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. YTA000100

Range Rover L322 Positive Plus + Battery Alternator Cable Lead 4.4 7514551

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LK62-9D370-BC

Range Rover Velar L560 Fuel Pump Control Module ECU 2.0 Diesel LK62-9D370-BC

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1698204726

Mercedes-Benz A-Class W169 Rear Left Door N/S Control Unit Module A1698204726

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0907064DD

Audi A4 B8 A5 8T Body Control Module BCM Comfort Control Unit 8K0907064DD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5NA971693K

Volkswagen Tiguan Mk2 Door Wiring Loom Harness Rear Left N/S 5NA971693K

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2469017000

Mercedes W176 Windscreen Rain Sensor Unit Module A2469017000

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V4945070-2

Audi A3 8V Rear Tail Light Lamp Outer Side Right O/S Harness Wire 8V4945070

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9284442

BMW F20 F30 Mini F56 Air Conditioning Module Control Unit 9284442

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2125455640

Mercedes W212 Battery Holder Mount Bracket Support E-Class A2125455640

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. V23234-A0001-X037

Porsche 718 Boxster 982 Relay 12V 20/30A V23234-A0001-X037

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 95B035736A

Porsche Macan 95B USB SD SIM Card Module Multimedia Reader Port 95B035736A

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1715405045-1

Mercedes SLK R171 Central Gateway Module ECU Control Unit A1715405045

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3428557

BMW Z4 E86 Alarm System Ultrasonic Roof Control Module 3428557

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06J903023G

VW Volkswagen Polo GTI 6R Golf Mk7 Alternator Generator 14V 140A 6J903023G

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CVS-012-5

CVS-012-5 Expansion Module Electrical Unit Light Control Module

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2711504733

Mercedes W204 Injection Electrical Wiring M271 Petrol Engine Cable A2711504733

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 281480007R

Smart A453 Renault Trafic MK3 Front Dashboard Tweeter Speaker 281480007R

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K5945095AA-1

Audi A4 B8 Saloon Rear Lamp Tail Light Wiring Harness Plug Left N/S 8K0973706

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1765450000

Mercedes-Benz A-Class W176 Bluetooth Unit Module Bracket Holder A1765450000

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0971104J

Audi A8L 4H Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 4H0971104J

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0045468440

Mercedes W177 Power Distributor Connector Plug Unit A0045468440

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V3971036

Audi A3 S3 8V Front Door Card Wiring Harness Passenger Side 8V3971036

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8P0035195G

Audi A3 8P Radio Multimedia Player CD Head Unit 8P0035195G

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0919604H-2

Audi A8 4H Head Up Display Hud Project Screen Control Unit Module 4H0919604G

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. VW-Remote-Key

VW Passat Radio Remote Control Alarm Key Fob Control Unit Module

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. YTA000010

Range Rover L322 Positive Plus + Starter Wiring Harness Cable 4.4 1H4Z-14N144-EA

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3453294

Mini Cooper One R56 High PL3 SPEG DC/DC M3 Fuse Distribution Box 3453294

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. KT1T18B955EB

Ford Transit Connect Mk2 II Dashboard Display Screen Panel KT1T-18B955-EB

€123.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1698204826

Mercedes-Benz A-Class W169 Rear Right Door O/S Control Unit Module A1698204826

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DN1T-15K600-ED

Ford Fiesta Mk7 Transit Courier Body Control Module BCM ECU DN1T-15K600-ED

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0945093H-2

Audi A8 D4 Rear Taillight Tail Light Lamp Wiring Inner Left N/S 4H0945093H

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9P4971111

Porsche 718 Boxster 982 Power Steering Rack Wiring Loom 9P4971111

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9500079

BMW X2 F39 F40 F45 F45 LCI F46 F48 Steering Control Module SAS Unit ECU 9500079

€184.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8519663-15

Mini Cooper D R56 LCI R60 N47N 112HP Engine ECU Kit DDE 8519663 Key CAS3 Manual

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9137703

Mini Cooper One R55 R56 Door Wiring Harness Factory Right O/S 9137703

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 0AM911023T

Volkswagen Touran 1T 1.4 TSI Petrol Engine Starter Motor 0AM911023T

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AV1T-14A584-HCD

Ford B-Max Mk1 Door Loom Wiring Harness Cable AV1T-14A584-HCD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7PP907283

Audi RS6 C7 Tire Tyre Pressure Monitor System Moduel Control Unit ECU 7PP907283

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0937517

Audi A8L 4H Fuse Relay Battery Junction Box Housing 4H0937517

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0971230KE

Volkswagen VW Caddy 2K Alternator Wiring Loom Harness 1.9 TDI 1K0971230KE

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K0971237

Audi A6 C8 A7 4G Engine Earth Line Ground Wiring Harness Cable 4K0971237

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K9035225B

Audi A6 C8 Antenna Aerial Amplifier AMP 4K9035225B

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K0907347B

Audi A6 C8 Mild Hybrid Power Distribution Mount Bracket Support 4K0907347B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9387164

BMW X3 F25 Front Lamp Headlight Control Module Unit ECU 9387164

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8793254

Door Wiring BMW X3 G01 F97 X4 G02 F98 Cable Harness Rear Left Right N/O/S

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CH22-15K801-BB

Range Rover Sport L320 5 Button Smart Key Fob CH22-15K801-BB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9V4T-14A076-AB

Ford Kuga C394 Fuse Box Lid Cover Panel Housing Top 2.5 Petrol 9V4T-14A076-AB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DK62-14300-CE

Range Rover L405 Fuse Box Power Terminal Wiring Harness Cable DK62-14300-CE

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GK3T-14A120-AD

Ford Transit Mk8 Battery Cable Wire 2.0 TDCi Diesel GK3T-14A120-AD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9384988

BMW F20 F45 F46 Kafas Camera Control Module Unit ECU 9384988

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. YML500861

Land Rover Range Rover Sport L320 Driver's Seat Wire Harness Cable YML500861

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2125403005

Mercedes W212 M271 Wiring Battery Alternator Starter Harness Cable A2125403005

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6429002900-11

Mercedes W164 ML300 OM642.820 204HP Engine Control ECU Kit A6429002900 Automatic

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0945095H-2

Audi A8 D4 Rear Outer Tail Light Lamp LED Wiring Cable Left N/S 4H0945095H

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2819006904

Smart 453 M281.910 90HP Engine Control Unit ECU A2819006904 Automatic

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1734633

Ford Fiesta MK7 1.6 TDCI Starter Motor Engine Diesel 8V2111000AD

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0035223M-1

Audi A5 8T Sound System Audio Amplifier Amp Unit Bang & Olufsen 8T0035223M

€664.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 038907282

VW Volkswagen Transporter T5 Spark Plug Glow Plug Relay Module Unit 038907282

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 99161010500

Porsche Cayman 981 718 982 Fuse And Relay Box Petrol 99161010500

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V5035225

Audi A3 8V Keyless Entry Amplifier Control Box Module Aerial Antenna 8V5035225

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06A903143P

Audi TT 8N Alternator Bracket Mount Holder 06A903143P

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8654460-2

Mini Cooper F54 F55 136HP Petrol B38 Engine ECU Kit DME 8654460 + BDC + Key

€370.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8519663-16

Mini Cooper SD R60 R61 ALL4 N47N 143HP ECU Kit DDE 8519663 CAS3 Key Manual

€194.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. W164-JUNSUN

Mercedes W164 X164 Junsun Car Radio 10.1"Android CarPlay 32GB XT8191CX-F

€170.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9118611

BMW Z4 E86 Hifi Audio Sound AMP Amplifier Module 9118611

€574.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 059907309AC-1

Audi Q7 4M 3.0 TDI DPXA 286HP Quattro Engine Control ECU 059907309AC Automatic

€550.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2128208826

Mercedes W212 Door Control Module Unit ECU Rear Right O/S A2128208826

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2048700594-1

Mercedes W204 Radio Player COMAND Navi CD Head Unit A2048700594

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L0907719

Volkswagen Touareg 7L Anti Theft Alarm System Control Module Unit ECU 7L0907719

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. EB3T-14603-A

Ford Ranger Mk3 T6 Positive Battery Cable Lead Terminal Harness EB3T-14603-A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FK72-14E112-AB

Land Rover Discovery Sport L550 Rear Bumper PDC Control Module FK72-14E112-AB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8647878

BMW X5 F15 N20 Petrol Sensor System Engine Wiring Harness Cable Loom 8647878

€175.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2465401950

Battery Base Mercedes C117 W176 W246 Power Fuse Relay Box A2465401950

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR047573

Range Rover Evoque L538 2.2 TDCI Starter Motor EJ3211001AB

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AH42-14D374-AF

Land Rover Range Rover L322 Air Module Control Unit AH42-14D374-AF

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2389055000

Mercedes W205 Antenna Aerial Amplifier Duplexer Module Receiver Unit A2389055000

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

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