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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BMW E93 Head Unit Radio Player Navigation Control Module 5A2BF31

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CX-DVP292N

Panasonic Mobile DVD CD Video Player CX-DVP292N

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BT-14B533-BG

Ford Fiesta Mk8 Door Control Module Unit ECU Front Passenger Side H1BT-14B533-BG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 130831041000

Audi A5 8T Headlight Inner LED Inner Module Unit 6NHM0000 130831041000

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K907425B-18

Audi S3 8V 2.0 TFSI DJHA 310HP Quattro Engine ECU Kit 06K907425B BCM + Key

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1664401709

Mercedes W166 Centre Console Wiring Electric Harness Loom Wire A1664401709

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009058000

Windscreen Camera Mercedes W207 W221 Front Windshield Module Unit A0009058000

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 130002618

BMW X3 X5 E53 E83 Front Seat Adjustment Actuator Drive CRH 1-1968-01

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8965002160

Toyota Corolla E12 Power Steering Control Module Unit ECU 8965002160

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8H22-14D374-AD

Land Rover Discovery 3 L319 Air Module Sensor Control Unit 8H22-14D374-AD

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0971501

VW Volkswagen Touareg 7P Battery Positive Cable Holder Support 7P0971501

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8983102060

Toyota Auris Mk1 E15 Crash Impact Air Module Sensor Unit Right O/S 89831-02060

€23.95

Free delivery: Nov 12 – 13

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Part no. A2465400140

Mercedes-Benz A-Class W176 Equipment Electrical Cover Fuse Box A2465400140

€23.95

Free delivery: Nov 12 – 13

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Part no. 8P0941004-2

Audi A3 8P Front Lamp Headlight Halogen Right O/S Harness Loom Wire 8P0941004BC

€23.95

Free delivery: Nov 12 – 13

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Part no. 8J0035456A-1

Antenna Amplifier Audi Q5 8R A6 C6 A5 8T Mobile Phone Module Unit 8J0035456A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 59312332

Ford Fiesta Mk7 Electric Power Steering Control Unit Module 1.6 TDCI 59312332

€70.95

Free delivery: Nov 12 – 13

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Part no. 5Q0959595A

Audi A3 8V Door Control Unit Rear Left Right N/O/S 5Q0959595A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907705K

Audi A8L 4H Steering Angle Steering Wheel Column Control Module ECU 4H0907705K

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HPLA-70718-SF

Range Rover L405 Telematics Control Module Unit ECU HPLA-70718-SF

€99.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1376305

Ford Galaxy Kuga Titan Kuga C394 Engine Starter Motor 4M5T-11000-FA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8267242140

Toyota RAV4 Mk2 Junction Block Fuse Relay Box Fusebox Housing Cover 8267242140

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937084AQ

Audi A3 8V Body Control Comfort Unit Module BCM Unit ECU 5Q0937084AQ

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6397601804

Mercedes Vito W639 Door Handle Bowden Cable Catch Rear Wire A6397601804

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5B5FF36

BMW F70 F74 G60 X1 U11 Front Windscreen Camera Control Unit Module 5B5FF36

€313.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2219001201

Mercedes W221 Door Control Module Unit Rear Left Right N/O/S A2219001201

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8711311

BMW G20 LCI Positive Plus Battery Wiring Cable Loom 8711311

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7601305

BMW F10 F11 LCI F13 N63 N63N Petrol Water Pump Adapter Lead Cable Wiring 7601305

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6944962

BMW E60 E61 Centre Console Switch Centre DSC PDC 6944962

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7542615

BMW 1 3 5 6 7 Z4 Series E87 E90 E60 E64 E65 E85 Power Distribution Box 7542615

€23.95

Free delivery: Nov 12 – 13

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Part no. 3G0971694A

Volkswagen Passat B8 3G Door Wiring Harness Loom Cable Rear Right O/S 3G0971694A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9113348

BMW E81 E87 LCI E90 E91 DC/DC Wandler Torque Converter Module 9113348

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. YIB500070

Range Rover Sport L320 Sat Nav DVD Reader Driver Unit YIB500070

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479002908

Mercedes W205 W213 Camera Module Front Windscreen Windshield Unit A2479002908

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8519663-4

Mini Cooper D ALL4 R60 N47N 1.6 Diesel Engine ECU Kit DDE 8519663 CAS3 + Key

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9389262

Mini F55 Rear Door Wiring Loom Harness Cable Left Right N/O/S 9389262

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3S7T-18C830-AD

Ford Galaxy S-Max Mondeo Mk4 CD Changer Player Unit 3S7T-18C830-AD

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018JJ-1

Audi A5 8T CGLC 2.0 TDI 177HP Engine ECU Kit 03L906018JJ Automatic

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AB39-14A584-ALK

Ford Ranger Mk6 Front Door Wiring Loom Harness Cable Right O/S AB39-14A584-ALK

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729007103

Mercedes R172 SLK Roof Control Module ECU A1729007103

€213.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0048273745

iPod Interface Mercedes W204 W207 W212 Module Control Unit ECU A0048273745

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0919294C

Audi A3 8V Golf Mk7 PDC Parking Distance Control Module Unit ECU 5Q0919294C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G6035577H

VW Volkswagen Golf GTI MK7 Roof Aerial Amplifier Sender FM2 Left N/S 5G6035577H

€23.95

Free delivery: Nov 12 – 13

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Part no. A2038700426

Door Module Mercedes CL203 Front Right O/S Control Unit A2038700426

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2215408609

Mercedes W221 Rear Door Wiring Harness Cable Left N/S A2215408609

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C1T-14A076-BB

Ford Transit Mk7 Fuse Box Cover Electrical Unit Housing Trim Cap 6C1T-14A076-BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9263944

BMW X5 E70 X6 E71 CIC MID CD Player Audio System 9263944

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4N0907064BB

Audi A6 C8 Comfort Convenience Control Module Body Control Unit ECU 4N0907064BB

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1883367

Ford Focus ST-3 Mk3 Rear Parking Distance Sensor Wiring Harness F1ET-15K868-AED

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2711535391-2

Mercedes R171 SLK 200K 184HP M271.944 Engine ECU Kit A2711535391 Key Lock

€275.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EK2T-14B428-GA

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

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. R8E2-14D620-CA

Land Rover Sport L550 Door Control Unit ECU Rear Driver Side R8E2-14D620-CA

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 05L907309AD-1

VW Transporter T6.1 2.0 TDI DNAB 110HP Engine Control ECU Kit 05L907309AD Manual

€455.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7811701-2

BMW 1 3 Series E87 LCI E90 E91 N47 DDE 7811701 Engine Control Unit Diesel ECU

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L5971120

Porsche Cayenne 955 Front Door Wiring Loom Harness Driver's Side 7L5971120

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9079001605

Mercedes W907 Central Gateway Control Unit Module Relay ECU A9079001605

€465.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6907530M

VW Volkswagen Touareg 7P Gateway Module Control Unit ECU 7P6907530M

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6953191

BMW 5 Series E61 Touring Diversity Aerial Antenna Suppression Filter 6953191

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X2T-15B484-AB

Jaguar XF X250 Rear Bumper Parking Sensor Wiring Loom 8X2T-15B484-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3418539

BMW X3 E83 Door Crash Sensor Bracked Mount Front Left Right N/O/S 3418539

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8966102B80

Toyota Corolla E120 Engine ECU Control Unit 1.6 VVT-i 3ZZFE 110HP 8966102B80

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BS7T-14K131-DA

Land Rover Discovery Sport L550 Evoque L538 Fuse Relay Box BS7T-14K131-DA

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9315685-1

BMW 1 2 3 4 F20 F21 F22 F30 F31 F32 F36 Module Body Control Unit FEM 9315685

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1P0035153

Seat Leon Mk2 Player CD Radio Audio Navigation Head Unit 1P0035153

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0959592E

Audi A4 B9 Front Door Control Module Unit Passenger Side ECU 8W0959592E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AW83-10E887-CB

Jaguar XF X250 Navigation Head Unit DVD Player Sat Nav AW83-10E887-CB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005456786

Mercedes W205 W213 Fuse Box Protective Bracket Cover A0005456786

€23.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. Q0003188V008000000

Smart Fortwo C450 Engine Starter Motor Actuator A0051512601 0003188V008

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0919805

Audi A4 B8 Smart Card Reader Smart Card System TV 4F0919805

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9877611

Mini Cooper F55 F56 F60 Windscreen Rain Light Solar Sensor Control Unit 9877611

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971036B

Audi A5 8T S5 8F S5 8T Door Wire Cable Harness Loom Front Passenger 8T0971036B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971035C

Audi A4 B8 Door Wiring Harness Cable Loom Front Driver's Side 8K0971035C

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V4971036BB

Audi A3 8V Sportback Front Passenger's Door Loom Wiring Harness 8V4971036BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA907727P

Skoda Octavia IV Climate Air Conditioning Control Module Unit 5WA907727P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8585729

BMW 3 Series F30 320d N47N Engine Gearbox Module Wiring Loom Harness Cables Set

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L907309G-2

Volkswagen Scirocco Mk3 2.0 TDI CUUB 110HP Engine ECU Kit 04L907309G BCM Key

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5E0971693C

Skoda Octavia MK3 Door Wiring Loom Harness Cable Wire Rear Left N/S 5E0971693C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6957348

BMW 6 Series E63 E64 F06 F12 F13 Aerial Antenna Amplifier Module Right O/S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L911024A

Audi A4 B9 2.0 TDI DETA Engine Starter Motor Actuator Starter 04L911024A

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6960218

BMW E65 Passenger Seat Air Module Sensor Control Unit SRS 6960218

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8573258-12

BMW F20 F30 F31 118d 318d N47N 143HP Engine Control ECU DDE 8573258 Automatic

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8576333-7

BMW F30 F31 F32 320dX 420dX N47N 184HP Engine ECU Kit DDE 8576333 Automatic

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1688200289

Mercedes W168 Antenna Amplifier Unit Roof Rear Rail A1688200289

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8582803-1

BMW F10 530d N57N 258HP Engine Control Unit Module ECU DDE 8582803 Automatic

€218.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K0945111A-2

Volkswagen Caddy Mk3 Rear Tail Light Wiring Harness Cable Left N/S 2K0945111A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8844292

BMW X1 U11 High-Voltage Battery Module Connector Wiring Cable 8844292

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0465456628

Mercedes W203 W204 W218 Front Seat Wiring Loom Plug Connector A0465456628

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2044400938

Mercedes C204 Electric Wire Harness Loom Cable Connector A2044400938

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0015456403

Mercedes Sprinter W906 Fuse Box Relay Cover Box Cap A0015456403

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0025451201

Mercedes W169 W245 W906 Fuse Box Carrier A0025451201

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2215408908

Mercedes W221 Door Harness Wiring Loom Rear Right O/S A2215408908

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1871336

Ford Focus Mk3 ST Engine Starter Motor 2.0 Petrol EcoBoost F1FT-11000-NA 1871336

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8796289

BMW X3 G01 X4 G02 X5 G05 Battery Terminal Negative Cable Wire Wiring 8796289

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8672514-1

BMW F80 M3 F82 F83 M4 431HP Engine Control ECU Kit DME 8672514 + FEM Module Key

€1,139.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6959257

VW Volkswagen Touareg 7P Backrest Release Control Module Unit ECU 7P6959257

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KK2T-18D804-HS

Ford Transit Custom Mk8 Radio Stereo Sat Nav Head Unit KK2T-18D804-HS

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9282285

BMW X3 F25 Central Gateway Module Control Unit ECU 9282285

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. XQM500520

Land Rover Range Rover Sport L320 Front Door Speaker Left Right N/O/S XQM500520

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K9945096-2

Audi A4 B8 Estate Tail Light Rear Right O/S Boot Light Wire Harness 8K9945096

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1698702210

Mercedes-Benz A B W169 W245 Tow Protection Switch Button Control Unit Module

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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