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 Transit Custom Mk8 Sliding Side Door Wiring Loom Left N/S KK2T-19L540-AD

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AV1T-14026-AAB

Ford B-MAX Door Wiring Frame Assy Jumper Rear Left N/S AV1T-14026-AAB

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3R0971073

Seat Exeo 3R Front Frame Panel Wiring Harness Cable 3R0971073

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LR028237

Range Rover Evoque L538 Occupancy Sensor Mat Front Pasenger Seat 8X23-14C288-AB

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9343287

BMW i3 I01 Mini F56 Air Conditioning System A/C Control Unit Module 9343287

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P6035552A

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Right O/S 7P6035552A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5A130F9

BMW F40 F44 G20 Parking Control Module Unit USS ECU LOW 5A130F9

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8U0971036

Audi Q3 8U Door Loom Wiring Harness Cable Front Passenger Side N/S 8U0971036

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8506434-4

BMW E81 E84 E87 E90 LCI 18d 118d 318d N47 ECU Kit DDE 8506434 CAS3 Key Automatic

€251.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5E3907159F

Skoda Octavia IV Impact Sound Control Module Unit ECU 5E3907159F

€70.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2469003417

Parking Brake Module Mercedes W176 W231 W246 Electric Control Unit A2469003417

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1J0971120AP

Volkswagen Golf Mk4 Door Wiring Harness Loom Front Driver's Side 1J0971120AP

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A9078280000

Mercedes W906 W907 Radio Antenna Rod Roof Antenna A9078280000

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L906023PP-2

Audi A3 8P 1.6 TDI 105HP CAYC Engine Control ECU Kit BCM Key 03L906023PP Manual

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8606306

BMW F10 F11 F30 184 HP Petrol N20 Engine Control Unit ECU DME 8606306 Manual

€332.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7PP905852C

Porsche Cayenne 92A Steering Column Locking Control Unit Module 7PP905852C

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2098205026

Mercedes W209 Convertible Roof Module Folding Top Control Unit ECU A2098205026

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0055421218

Crash Sensor Mercedes W176 W204 W212 Impact Airbag Unit Module A0055421218

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6R0971537H

Audi A1 8X Negative Battery Terminal Cable Wiring 6R0971537H

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6992415

BMW 7 F02 ECU Body Control Module Junction Box JBBFEIIIR LP 6992415

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DPLA-14D620-AB

Range Rover Sport L405 Rear Door Control Module Unit Right O/S DPLA-14D620-AB

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K0971250

Skoda Octavia II Negative Battery Terminal Cable Wire Wiring 1K0971250

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6956744-1

BMW E81 E82 E87 E88 E90 E91 Parking Sensor PDC Sydneyblau - A19 6956744 SET X2

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7288993-2

BMW X5 E70 Headlight Headlamp Wiring Harness Cable Plug Left N/S 7288993

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0919603E-1

Audi A4 B8 Display Screen Sat Nav Navigation Dashboard 8T0919603E

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9303637

BMW Z4 E89 AUX USB Smartphone Connection Lead Cable Wiring 9303637

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8J0971085A

Audi TT TTS 8J Rear Bumper PDC Parking Sensor Wiring Loom Harness 8J0971085A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6954298

BMW E81 E87 E90 E91 Adapter Lead Medium Range Loud Speakers 6954298

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. K8D2-19H440-AB

Land Rover Evoque L551 Discovery L550 Keyless Control Module K8D2-19H440-AB

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8U0907468Q

Audi Q3 8U Gateway Control Module Unit ECU 8U0907468Q

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K0035507L

VW Volkswagen Scirocco Mk3 Roof Top Antenne Control Unit Module 1K0035507L

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0061511001

Starter Motor Mercedes W906 M272 Engine Diesel Bosch A0061511001

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 83A907159

Audi Q3 RSQ3 F3 Body Sound Impact Control Module ECU 83A907159

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H22-14A614-EA

Land Rover Discovery 4 Driver's Seat Memory Wiring Loom Harness 4H22-14A614-EA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. FK72-14632-BCD

Land Rover Discovery Sport L550 Door Wiring Rear Right O/S FK72-14632-BCD

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LR072286

Land Rover Discovery Sport L550 Tailgate Opening Sensor Upper FK72-14E108-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5A82A01

BMW G20 G21 G28 Side Indicator Control Module Unit Left N/S 5A82A01

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2479001709

Mercedes W907 Radio Control Unit ECU Module A2479001709

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0862335F-1

Audi A4 B8 Bluetooth Multimedia Interface Control Module Unit ECU 8T0862335E

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7188487

BMW E93 Convertible Battery Mounting Bracket Clamp Bolt Holder Mount 7188487

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5QA919294E

Volkswagen Golf Mk7 5G PDC Parking Sensor Control Module ECU 5QA919294E

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7476046

BMW F20 F21 F30 F31 Mini F55 F56 F57 Fuel Pump Module Control Unit ECU 7476046

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1669063301-2

Mercedes ML W166 Rear Tail Light Lamp Wiring Harness Cable Left N/S A1669063301

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2059000828

Door Module Mercedes GLC X253 Rear Door Left Control Module A2059000828

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2649000700-3

Mercedes W205 C300 OM264.920 Engine Control Module ECU A2649000700 Automatic

€208.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0907705J

Porsche Cayenne 92A Steering Column Control Module Unit 4H0907705J

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6261500075

Mercedes W205 Alternator Protective Cover Metal Sheet A6261500075

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2056102702

Mercedes W205 Battery B Engine Compartment Terminal Point A2056102702

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3426159

BMW X3 E83 2.5i 3.0i M54 Wiring Loom Harness Engine Automatic Gearbox 3426159

€85.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. L8A2-14D374-CE

Range Rover L560 AirBag Control Air Module Unit SRS ECU L8A2-14D374-CE

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2469007314-1

Mercedes CLA C117 Central Display Screen Multimedia Sat Nav Unit A2469007314

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7601189

BMW Mini Cooper R55 R56 LCI N16 Engine Wiring Loom Injection Ignition

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BK2T18D815GD

Ford Transit Custom MK8 Radio Stereo Audio USB Head Unit Panel BK2T18D815GD

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3B0K-40104

Ford Ranger Mk6 Additional Fuse Box Relay Box Module Unit TKE4180109A

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0907355C

Audi A7 4G A8 D4 Ad Blue Control Unit Module ECU 3.0 TDI Diesel 4H0907355C

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9223682

BMW X5 X6 Series E70 E71 Dashboard Onboard Monitor Display Screen 8,8" 9223682

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5K0937084J

Volkswagen Sharan 7N Fuse Box Module Comfort BCM Control Unit ECU 5K0937084J

€137.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8R0867749A

Porsche Macan 95B Battery Holder Strap Mounting Bracket Clamp 8R0867749A

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9335291

BMW F20 Driver Side Door Cable Harness Wiring 9335291

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6798872

BMW F10 F11 F30 F31 Wheel Electronics Module RDC 433MHZ Control Unit 6798872

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8578082

BMW F30 F32 F36 335dX 435dX N57Z 313HP Engine ECU Unit Kit DDE 8578082 Key FEM

€332.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7L0971537

Porsche Cayenne 9PA Negative Battery Terminal Cable Wiring Loom 7L0971537

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BV21-12A650-ACD-1

Ford Fiesta Mk7 1.4 TDCI 70HP KVJA Engine Control ECU BV21-12A650-ACD Manual

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4N0955557A

Audi A6 C8 A7 C8 Door Crash Impact Sensor Front Left N/S Side 4N0955557A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0919275-DGR

Audi TT 8J PDC Parking Distance Sensor Control Daytona Grey Pearl Z7S 4H0919275

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1698208026

Mercedes W169 Door Control Module Right Front O/S A1698208026

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9191568

BMW X5 E70 CCC Navigation System CD Player Sat Nav Head Unit 9191568

€284.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3WA959595A

Audi A3 RS3 8V Door Control Unit ECU Module Front Driver's Side 3WA959595A

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1679003811

Door Module Mercedes W205 W213 C253 Front Left N/S Control Unit ECU A1679003811

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8648843

BMW F45 Mini F60 B38X High Voltage Accumulator Negative Ground Cable 8648843

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P6035552

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Left N/S 7P6035552

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8582279-8

BMW F30 F32 F34 GT 320d 420d N47N 184HP Engine Module Unit ECU DDE 8582279

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9230404-1

BMW X1 E84 Rear Bumper PDC Cables Wiring Harness Loom 9230404

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2059009230

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

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8642705-1

Mini Cooper F56 B38 136HP Engine Control ECU DME Kit 8642705 Automatic

€227.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0907063DD

Audi A5 8T Onboard Comfort Supply BCM Control Module Unit ECU 8K0907063DD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LR052994

Land Rover Discovery 4 L319 Rear Parking Sensor Wiring Loom Harness EH2215B484CB

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8507880

BMW 1 3 Series F20 F21 F30 F31 N47N Wiring Loom Harness Engine Gearbox Module

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8509910

BMW X3 F25 X4 F26 Engine Electronics Control Unit Box Cover Trim 8509910

€26.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6519004500

Mercedes W205 Engine Control ECU Unit 204HP Diesel Automatic Gearbox A6519004500

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0001502780-1

Mercedes W203 CL203 W204 M272 Petrol Ignition Coil Cable Connector A0001502780

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. R8D2-14A614-CA

Range Rover Evoque L551 Steering Gear Wiring Loom Harness Cable R8D2-14A614-CA

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9255135

BMW E81 E87 E90 E91 PDC Parking Sensor Front Rear Mineralgrau Mineral Gray B39

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F0959793E

VW Volkswagen Tiguan 5N Front Right O/S Door ECU Module Control Unit 4F0959793E

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9219646

BMW X5 E70 Front Bumper Park Sensor PDC Wiring Harness Cable Loom 9219636

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K0035186P-1

VW Volkswagen Golf Mk5 Passat B6 Radio CD Player Head Multimedia Unit 1K0035186P

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6461509777-2

Mercedes C209 Engine Control ECU 2.1 Diesel 150 HP A6461509777 Automatic KIT

€142.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A9075406960-1

Mercedes Sprinter W907 Fuse Box Prefuse Box Module F150/1 - MFB-1 A9075406960

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9358302

Mini 1 2 3 Series F20 F21 F30 LCI F55 F56 Compensator LTE ECE 9358302

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6970889

BMW 7 Series E65 E66 E67 Sensor Vehicle Centre Airbag 6970889

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0971035AR

Audi A4 B8 Front Driver's Door Wiring Harness Loom Electrical Cable 8K0971035AR

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9190107

BMW Z4 E89 Battery B+ Engine Compartment Terminal Point 9190107

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 09D927750LJ

Porsche Cayenne 955 Automatic Gearbox Transmission Module 3.0 TDI 09D927750LJ

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9488417

Mini F60 BMW F48 SCR AdBlue Module Control Unit 9488417

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 897410D020

Toyota Yaris XP10 Central Door Locking Module Control Unit ECU 897410D020

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8574091-3

BMW F10 520d N47N 184HP ECU Kit Control Unit DDE 8574091 CAS4 + Key

€151.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9134667

BMW X5 E70 E87 E90 E91 E92 Seat Control Unit Module ECU 9134667

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5WA959436B

Audi A3 8Y Volkswagen Golf Mk8 Keyless Entry Module Control Unit ECU 5WA959436B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W0959593N

Audi A4 B9 Front Door Module Control Unit ECU Driver's Side 8W0959593N

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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