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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Earth Ground Cable Mercedes W204 C207 Line Strap Battery Lead A2045407135

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8P0035195M

Audi A3 8P CD Radio Stereo Head Unit Symphony 8P0035195M

PLN 474.95

Free delivery: Jul 16

If paid before 14:00

Part no. 6G9T-14K131-DB

Range Rover Evoque L538 Fuse Relay Box Module 2.2 Diesel 6G9T-14K131-DB

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 6R0971537N

Seat Ibiza 6J Battery Ground Line Earth Negative Cable Wiring 6R0971537N

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 99764514003

Porsche Cayenne 955 9PA Changer 4-Disc Multichanger CD DVD 99764514003

PLN 474.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5R3919294

Volkswagen Golf CD1 Park Parking Assist PDC Distance Control Module 5R3919294

PLN 161.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W5945076A-1

Audi A4 B9 Rear Tail Light Lamp Connector Plug Wire Outer Right O/S 8W5945076A

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 9284282

BMW F10 Body Control Module ECU Junction Box PL6 JBBFE III V2 9284282

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. 3V0971694Q

Skoda Superb Mk3 3V Rear Door Wiring Harness Cable Right O/S 3V0971694Q

PLN 284.95

Free delivery: Jul 16

If paid before 14:00

Part no. 7634297-3

BMW F20 F30 116i 316i N13 136HP Engine Control ECU Kit DME 7634297 Automatic

PLN 1,804.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W5945092AA-1

Audi A4 B9 Sedan Rear Tail Light Lamp LED Wiring Outer Right O/S 8W5945092AA

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 9219646

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

PLN 398.95

Free delivery: Jul 16

If paid before 14:00

Part no. AMR5633

Land Rover Freelander L314 Burglar Bonnet Alarm Sensor Switch Anti Theft AMR5633

PLN 47.95

Delivery: Jul 16

If paid before 14:00

Part no. 9231180

BMW F22 F30 F32 Antenna Amplifier AM FM Booster AMP 9231180

PLN 123.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5Q4959593R

Seat Leon Cupra Mk3 Front Door Control Module Unit Driver Side 5Q4959593R

PLN 85.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9372556

BMW G11 Door Wiring Harness Rear Left Right Door N/O/S Wiring Loom 9372556

PLN 108.95

Free delivery: Jul 16

If paid before 14:00

Part no. A2059009643

Mercedes W205 Telematics Bluetooth Module Control Unit ECU A2059009643

PLN 189.95

Free delivery: Jul 16

If paid before 14:00

Part no. 6907520

BMW 5 X5 Series E39 E53 Dual Band Cable Compensator Hands Free Phone 6907520

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. 7590857-4

Mini Cooper S JCW R56 N14 1.6 211HP Engine ECU Kit DME 7590857 CAS3 Key Manual

PLN 2,374.95

Free delivery: Jul 16

If paid before 14:00

Part no. 6864204

ICM Module BMW F20 F21 F30 F31 Control Unit 6864204

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. A2465405733

Wiring Harness Mercedes X156 W176 Petrol Battery To Starter Cable A2465405733

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. A1698204515

Media Plug Mercedes W169 W245 Multimedia Connection Cable Wire A1698204515

PLN 104.95

Free delivery: Jul 16

If paid before 14:00

Part no. 3C0937548

Volkswagen Passat CC Rear Tailgate Fuse Box Power Distribution 3C0937548

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 282754515R

Smart Fortwo C453 Comfort Module Control Unit ECU 282754515R

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0971679B

Audi A4 B8 Glove Box Passenger Air Module Switch Wiring Harness Cable 8K0971679B

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 9289679

BMW X5 F15 X6 F16 Antenna Amplifier Control Unit Module 9289679

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. A0035420219-3

Mercedes W639 W906 Relay 5-Pin Control Unit 12A Blue A0035420219

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0907063N

Audi A4 B8 Body Control Comfort Unit Module BCM Unit ECU 8K0907063N

PLN 218.95

Free delivery: Jul 16

If paid before 14:00

Part no. BJ32-19G255-CA

Range Rover L405 Amplifier Aerial Receiver Unit Right O/S Lower BJ32-19G255-CA

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5QA919294L

Audi Q2 GA Park Parking Assist PDC Distance Control Unit Module 5QA919294L

PLN 189.95

Free delivery: Jul 16

If paid before 14:00

Part no. 7409738

BMW X3 F25 Adaptive Headlight Xenon AHL Ballast Control Unit Lear TMS 7409738

PLN 854.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8T0907559E-1

Audi A5 8T 3.2 FSI 265HP CALA Quattro Engine Control ECU 8T0907559E Automatic

PLN 1,044.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9205477

BMW E82 E88 120i N43 Positive Battery Lead Cable Wiring Petrol 9205477

PLN 284.95

Free delivery: Jul 16

If paid before 14:00

Part no. KK3T-14D502-MCD

Ford Transit Mk8 Manual Transmission Wiring Harness 2WD 2.2 TDCI BK3T-14D502-FED

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. A0009001705

Mercedes C117 PDC Parking Sensor Control Module Unit ECU A0009001705

PLN 265.95

Free delivery: Jul 16

If paid before 14:00

Part no. GOLF-5K-SCREEN-2

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

PLN 949.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9290989

BMW F30 F31 F32 Bluetooth Player Unit Radio Professional CD 9290989

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 7559811

Earth Ground Cable BMW E60 E61 E63 N62N 540i 550i 650i Battery Starter Wiring

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. A2229002308

Mercedes W205 S205 W222 Door Control Module ECU Rear Right O/S A2229002308

PLN 156.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8380118

BMW E46 Amplifier Holder Audio Catch Bracket Mount Trim 8380118

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. A2059003222

Door Module Mercedes W205 W253 Control Unit Module Front Right O/S A2059003222

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 3c0937125

Volkswagen VW Passat B6 Fuse Box Relay Electrical Module Unit 3C0937125

PLN 56.95

Delivery: Jul 16

If paid before 14:00

Part no. 6842256

BMW X2 F39 F45 X1 F48 Active Gran Tourer Air Module ECU Control Unit 6842256

PLN 949.95

Free delivery: Jul 16

If paid before 14:00

Part no. XVJ500046

Range Rover Velar L560 Range Rover Sport L320 Bluetooth Control Module XVJ500046

PLN 218.95

Free delivery: Jul 16

If paid before 14:00

Part no. A2139068701-2

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Control Unit A2139068701

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5Q0971230FP

Battery Cable Audi A3 8V Starter Alternator Wiring Harness 5Q0971230FP

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. A6398201689

Mercedes Vito W639 Sound Audio Amplifier Control Unit Module A6398201689

PLN 664.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9343304

BMW X5 F15 X4 F26 Antenna Aerial Diversity Trap Circuit Control Module 9343304

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 7P5971694AD

Porsche Cayenne 92A Door Wire Wiring Loom Harness Rear Right O/S 7P5971694AD

PLN 341.95

Free delivery: Jul 16

If paid before 14:00

Part no. A6461501934-1

Mercedes CL203 CLC200 CDI 122HP M646.963 Engine ECU Kit A6461501934 Key Lock

PLN 1,234.95

Free delivery: Jul 16

If paid before 14:00

Part no. 1J0971243B

Audi TT 8N Battery Negative - Earth Cable Wiring Harness Cable 1J0971243B

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 91127929

BMW E90 Mekede Head Unit Android Radio Multimedia Infotainment 10" Screen 9M95S

PLN 474.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9380203

BMW G30 G31 G32 G11 G12 Cable Wiring Harness Holder Guide Mount 9380203

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5Q0937084BS

Audi TTS FV 8S BCM Body Control Module Unit 5Q0937084BS

PLN 189.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9153418

BMW F10 F11 B Plus Distributor Front Battery Cable 9153418

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. A2198203626

Mercedes CLS W219 Door Module Rear Right O/S Control Unit A2198203626

PLN 66.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4H0937529

Volkswagen Passat B7 Golf Mk6 Relay Repair Plug Wiring Connector Loom 4H0937529

PLN 51.95

Delivery: Jul 16

If paid before 14:00

Part no. A2661536679-2

Mercedes W169 A170 M166.940 116HP Engine Unit Module ECU A2661536679 Automatic

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. 03L906018JM-2

Audi Q5 8R 2.0 TDI CGLC Quattro 177HP Engine ECU Kit Lock Key 03L906018JM Manual

PLN 892.95

Free delivery: Jul 16

If paid before 14:00

Part no. 6948692

BMW E60 E61 E63 Passenger Side Door Airbag Control Module 6948692

PLN 56.95

Delivery: Jul 16

If paid before 14:00

Part no. 8518802

BMW F30 F31 330dX N57N Engine Gearbox Module Wiring Cable Loom Harness 8518802

PLN 284.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9347822

Head Unit BMW F10 F11 F20 F30 Navigation Sat Nav High Control Module 9347822

PLN 664.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9290358

Navigation Head Unit BMW F10 F11 F31 Harman Sat Nav Unit 9290358

PLN 1,139.95

Free delivery: Jul 16

If paid before 14:00

Part no. FW93-19C024-AB

Range Rover Sport L494 Bluetooth Antenna Amplifier Module FW93-19C024-AB

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. A2465404300

Mercedes W176 Door Harness Loom Cable Wiring Rear Right A2465404300

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9294209

BMW X3 F25 Radio CD Player Head Unit Navigation Sat Nav CIC Alpine 9294209

PLN 522.95

Free delivery: Jul 16

If paid before 14:00

Part no. A2188201926

Mercedes CLS C218 Bi-Xenon Headlight Ballast Module Control Unit A2188201926

PLN 332.95

Free delivery: Jul 16

If paid before 14:00

Part no. 7N0907530BQ

Volkswagen Caddy Mk4 Gateway Control Module Unit ECU 7N0907530BQ

PLN 398.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9376789

BMW F39 F45 F48 Mini F60 Positive Battery Wiring Cable 9376789

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8516753-1

BMW F01 730d F07 530d N57 245HP Engine Unit ECU Kit DDE 8516753 Automatic

PLN 759.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9468429

BMW F45 LCI Battery Cell Module Supervision Circuit Control Unit 225xe 9468429

PLN 569.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5H4971161BG

VW Volkswagen Golf Gti Cd1 Door Wiring Loom Harness Front Left N/S 5H4971161BG

PLN 118.95

Free delivery: Jul 16

If paid before 14:00

Part no. A2038207385

Mercedes W203 ECU Control Unit Crash Impact Sensor Module Air Module A2038207385

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8F0971029AL

Audi A5 8F Front Door Electric Wiring Loom Harness Driver's Side 8F0971029AL

PLN 113.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W0959655B

Audi A4 B9 A5 S5 F5 Air Module Control Unit ECU 8W0959655B

PLN 949.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8586540-3

BMW F30 F32 LCI 330d 430d N57N 258HP Control Unit ECU Kit DDE 8586540 FEM Key

PLN 949.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8T8971029AP

Audi A5 S5 8T Door Wiring Loom Harness Cable Front Right O/S 8T8971029AP

PLN 184.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4E0910217C

Audi Q7 4L Front Camera FAS Lane Assistance Control Unit 4E0910217D

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. 3Q0906121D

Skoda Karoq Crafter SY Transporter T6 Fuel Pump Control Unit 2.0 TDI 3Q0906121D

PLN 56.95

Delivery: Jul 16

If paid before 14:00

Part no. 8K0915429F

Audi TT FV A1 8X A3 8V A4 B8 A5 8T A6 C7 Battery Trim Cover Cap Black 8K0915429F

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 9797818

BMW X1 U11 High-Voltage Accumulator Control Unit 9797818

PLN 854.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8595865

Wiring BMW F32 F33 F36 LCI N57Z Engine Gearbox Module Wiring Harness 8595865

PLN 378.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8V5035225

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

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. A1729060005

Mercedes R172 Rear SAM Fuse Relay Box A1729060005

PLN 379.95

Free delivery: Jul 16

If paid before 14:00

Part no. 03L906018BP

Skoda Yeti Mk1 2.0 TDI 110HP CFHA Engine Control Unit ECU Kit 03L906018HJ Manual

PLN 569.95

Free delivery: Jul 16

If paid before 14:00

Part no. FK72-13A444-BBC

Land Rover Discovery Sport L550 Rear Seat Folding Wiring Cable FK72-13A444-BBC

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 6H52-18C847-DB

Land Rover Discovery 4 L319 Antenna Aerial Amplifier Module Unit 6H52-18C847-DB

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 012911023F

Volkswagen Touareg 7L Starter Motor Engine Diesel Bosch 012911023F

PLN 113.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8639595-1

BMW F30 F31 F32 320i 420i N20 xDrive ECU Engine Control Unit DME 8639595 Manual

PLN 1,139.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9296967

BMW F10 F11 LCI PDC Wiring Loom Harness Front Parking Sensor Cable 9296967

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5B702D3

BMW F74 Gran Coupé Fuel Pump Module Control Unit 5B702D3

PLN 370.95

Free delivery: Jul 16

If paid before 14:00

Part no. DK62-14301-BC

Range Rover L405 Negative Minus Battery Wiring Loom Harness Cable DK62-14301-BC

PLN 80.95

Free delivery: Jul 16

If paid before 14:00

Part no. A1695403905

Mercedes-Benz A B W169 W245 Door Cable Harness Wiring Loom Rear Left Right

PLN 47.95

Delivery: Jul 16 – 17

If paid before 14:00

Part no. 8T0959795J

Audi A5 8T Rear Door Module Control Unit Module ECU Left Right N/O/S 8T0959795J

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. YDB500320

Range Rover L322 Windscreen Rain Sensor Module Control Unit YDB500320

PLN 56.95

Delivery: Jul 16

If paid before 14:00

Part no. 9315130

Door Wiring Harness BMW F25 Rear Left Right Door N/O/S Wiring Loom 9315130

PLN 113.95

Free delivery: Jul 16

If paid before 14:00

Part no. 2150085

Ford Transit Custom Positive Battery Wiring Cable Harness Loom GK2T-14A099-BDB

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9382418

BMW F45 X1 F48 G30 Telematics Module Bluetooth Telephone Control Unit 9382418

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. A6401503634-2

Mercedes W169 W245 OM640.940 109HP Engine Control ECU Kit A6401503634 Automatic

PLN 949.95

Free delivery: Jul 16

If paid before 14:00

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