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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Mercedes W212 Battery Holder Mount Bracket Support E-Class A2125455640

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DG9T-14297-CE

Ford Mondeo Mk5 Front Screen Heated Jet Wire Harness Cable Loom DG9T-14297-CE

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9192665

BMW X3 F25 Positive Battery Clamp Point Cover Wiring Loom 9192665

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AU5A-9D370-AG

Ford Fiesta Mk7 Fuel Pump Control Module Unit 1.6 Petrol Engine AU5A-9D370-AG

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6081550035

Mercedes W177 Alternator Mounting Bracket Carrier A6081550035

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6807332

BMW G30 530e 530eX B48X Hybrid Battery Wiring Positive Under Floor Cable 6807332

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9287756

Loudspeaker Centre BMW F25 F15 Central Woofer Audio Speaker 9287756

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2K5972176

VW Volkswagen Caddy MK3 Trunk Boot Tailgate Wiring Cable Loom 2K5972176

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6G9T-15K602-AD

Ford Transit Mk7 Keyless Entry Receiver Control Unit Module 6G9T-15K602-AD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8691842

Mini Cooper S F57 192HP Engine Control Unit ECU B48 Petrol Engine 8691842 Manual

€332.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2189058500

Mercedes CLS X218 Antenna Amplifier Rear Aerial Control Module A2189058500

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 82G971036A

Audi A1 GB Mk2 Door Wiring Loom Harness Cable Front Passenger Side 82G971036A

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1EA959655ET

Volkswagen Caddy SB Air Module Control SRS ECU 1EA959655ET

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2229001909

Mercedes W205 W222 Door Module Front Right O/S Control Unit ECU A2229001909

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 51888255

Fiat Doblo Mk1 Stilo 192 Diesel Glow Plug Relay Pre-Heating Control ECU 51299012

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DG9T-14A597-BC

Ford Mondeo Mk5 Dashboard Sun Solar Sensor Unit DG9T-14A597-BC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2709000900-8

Mercedes W246 B180 270.910 122HP ECU Wiring Loom Harness Cable Plug A2709000900

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9337200

BMW 4 Series F32 F32N LCI Cable Loom Door Driver's Side Wiring Harness 9337200

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8506281

BMW E81 E87 E90 LCI 116d 316d 118d 318d N47 Engine ECU DDE 8506281 Manual

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9217004

Battery Cable Plus BMW X5 E70 E70N LCI X6 E71 Positive Pole 9217004

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1779006715

Mercedes W177 Wireless Charger Centre Console Phone Charging Module A1779006715

€99.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5M5T-14B192-CA-1

Ford Transit Custom Relay 4-Pin Black 12V 40A FOMOCO Set Pair 5M5T14B192CA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4L0907290A

Audi Q7 4L Door Control Unit Module ECU Front Right O/S 4L0907290A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3Q0907338E

Audi S3 8V Front Headlight Lamp Range Control Module ECU 3Q0907338E

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3452285

BMW X3 Series E83 Boardmonitor Central Information Display Screen 6,5"

€256.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 259156244R

Smart A453 Display Screen Multifunction Navigation Dashboard 259156244R

€151.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1644407110

Mercedes W164 Wiring Loom Cable Harness Door Rear Left Right A1644407110

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P5971162FT

Porsche Cayenne 92A Front Door Wiring Harness Loom Driver's Side 7P5971162FT

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7640004-10

Mini One R55 R56 Petrol N12 1.4 95HP Engine ECU Kit DME 7640004 CAS3 Key Manual

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6958446

BMW E65 E66 E67 Control Unit Door Front Passenger Side Module ECU 6958446

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1729051301

Mercedes SLK R172 Roadster Antenna Amplifier Control Module A1729051301

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8U0945093H-1

Audi Q3 8U Rear Tail Light Lamp Wiring Cable Inner Left N/S LED 8U0945093H

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 02Z911023G

VW Volkswagen Touran 1T 1.4 TSI Starter Motor Petrol Engine Unit 02Z911023G

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9221863

BMW X5 X6 E70 E71 Front Seat Control Module Unit Left Right N/O/S 9221863

€89.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6832696

Mini F55 F56 F57 IBS Negative Battery Lead Cable Wiring 6832696

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8377654

BMW X5 E53 AmplifIer Trap Circuit Antenna Booster Diversity 8377654

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7543297

BMW 5 6 Series E60 E61 E63 E64 N52 Cable Alternator Starter Base B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8485065

BMW G11 G12 G14 G15 G16 G30 G31 G32 G38 Positive Battery Cable Wire 8485065

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6952914

Wiring Loom BMW E65 E66 Cables Rear Bumper PDC 6952914

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2059002314

Mercedes W205 Front Sam Comfort Control Module Unit A2059002314

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7592080-7

BMW E60 LCI 523i N53 190HP Engine Control Module DME Kit 7583332 Manual

€450.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L903023-3

Volkswagen Scirocco Mk3 Audi A3 8V Diesel Engine Alternator 14V 140A 03L903023

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2055409127

Mercedes C205 Rear Axle Wiring Harness Cable Loom Left N/S A2055409127

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8699946-3

Mini Cooper F56 B38 136HP Engine Control ECU Kit DME 8699949 Automatic

€284.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9226881

BMW 1 Series F20 F20N F21 F21N LCI Radio Aerial Antenna Amplifier AM/FM 9226881

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2469007502

Mercedes W246 Airbag Control Module ECU Unit A2469007502

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2189000104

Mercedes CLS X218 Parktronic PDC Parking Assist Control Module A2189000104

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 82C971030G

Audi A1 GB Sportback Front Door Wiring Loom Harness Passenger Side 82C971030G

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9387262

FEM Module BMW F20 F21 F22 F30 F31 F32 F36 Body Control Unit ECU LR01 9387262

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2049002002

Mercedes W204 C207 Air Suspension Dynamic Level Control Unit Module A2049002002

€45.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9175883

BMW E60 E60 LCI E61 E61 LCI Front Door Wire Harness Loom Passenger Side 9175883

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 141951253B-1

VW Volkswagen Audi Seat Skoda Relay Unit 4 Pins 12V 40A 141951253B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8Y0035465

Audi A3 8Y A4 B9 Q5 FY Harman Speaker Amplifier Booster Sound System 8Y0035465

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V4971035BG

Audi A3 8V Door Trim Panel Wiring Loom Harness Front Driver's Side 8V4971035BG

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6812250

BMW X1 F48 Door Wiring Loom Harness Cable Front Passenger Side N/O/S 6812250

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6809472

Mini Cooper F56 Front Door Wiring Loom Harness Driver Side 9389221

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5G0971175C

Volkswagen Golf Mk7 Rear Tailgate Boot Lid Wiring Adapter Loom 5G0971175C

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K0971365CG

VW Volkswagen Golf Mk5 1K Seat Wiring Loom Cable Front Left N/S 1K0971365CG

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A4475400082

Mercedes Vito W447 Fuse Box Cover Trim Panel Lid Housing A4475400082

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9149673

BMW 5 Series E60 E61 LCI Alarm System Unit Ultra Sonic Module 9149673

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9153418

BMW F10 F11 B Plus Distributor Front Battery Cable 9153418

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4K5962239

Audi A6 C8 Tailgate Opening Steering Line D Pulse Generator Flap 4K5962239

€56.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. 8P0919475H

Audi A3 8P PDC Parking Assistance Distance Control Module Unit ECU 8P0919475H

€161.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6C11-13W030-BG-2

Ford Transit Mk7 Headlamp Light Lamp Front Left N/S Wire Harness 6C11-13W030-BG

€23.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. 02E911024A

Audi A3 8V 2.0 TDI Engine Starter Motor Bosch 02E911024A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4M0959792E

Audi A5 F5 Door Module Control Unit ECU Front Passenger Side 4M0959792E

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6835155

BMW 1 2 3 Series F40 F44 G20 Radio Antenna Amplifier Suppression Filter 6835155

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6H32-13W029-JA-2

Range Rover L320 Headlight Front Lamp Right O/S Wire Cable Plug 6H32-13W029-JA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2135452040

Mercedes W213 Head Unit Bracket Control Unit Module Holder Mount A2135452040

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8576341-14

BMW F20 F21 F30 F31 118d 318d Engine Control ECU DDE Kit FEM Key 8576341 Manual

€161.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9798377-2

Mini F60 B48X 224HP Engine Control Module Unit ECU DME Kit 9798377 Automatic

€379.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BS7T-14K131-BA

Range Rover Evoque L538 Fuse Relay Box Module 2.2 Diesel BS7T-14K131-BA

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9226331

BMW E87 LCI ECU Body Control Module Unit H2 9226331

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8058634

Engine Wiring BMW X3 M F97 X4 M F98 Loom Harness Ignition Module 8058634

€237.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7810950-1

BMW E60 E61 LCI 530d M57N2 235HP Engine ECU KIT DDE 7810950 CAS3 + Key Automatic

€279.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. JPLA-14D619-BB

Range Rover Sport L494 Door Control Module Rear Left N/S JPLA-14D619-BB

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6960428

BMW 3 5 6 Series E60 E61 E63 E64 E90 E91 FBAS Analog Video Module Unit 6960428

€175.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8516753-1

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

€180.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3Q0937125C

Audi RS3 F3 RSQ3 F3 Fuse Box Housing Module Left N/S 2.5 TFSI 3Q0937125C

€99.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AC11-12A650-BC-1

Ford Transit Mk7 2.2 TDCI P8FA 85HP Engine Control ECU Kit AC11-12A650-BC Manual

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9387145

BMW F30 LCI 330e B48X Negative Earth Cable Battery 9387145

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6928363

BMW E60 E61 Rear Bumper PDC Parking Sensor Wiring Loom 6928363

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0959592L

Volkswagen Golf Mk8 Front Door Passenger Side Module Control Unit 5Q0959592L

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8517862-5

BMW F10 F20 F30 520d 120d 320d N47N 184HP Engine Unit ECU DDE 8517862 Automatic

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9137799

Door Wiring Mini Cooper R55 R56 R57 R58 R59 Passenger Cable 9137799

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 46868565

Vauxhall Movano C Battery Terminal Wire Cable Earth Lead Connector 0468685650

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129066701-1

Mercedes W212 Saloon Rear Tail Lamp Light Wiring Cable Right O/S A2129066701

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. G2GT-14A075-AA

Ford Mondeo Mk5 Body Control Module Fuse Box Cover Lid G2GT-14A075-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0907801N

Audi A5 8T Electric Hand Parking Brake Control Unit ECU 8K0907801N

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1Z0035729E

Seat Ibiza 6J Bluetooth Interface Box Control Unit Module ECU 1Z0035729E

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9128569-1

BMW 1 Series E81 E82 E87 LCI E88 Wiring Harness Air Valve Air Flap 9128564

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0959663D

Audi Q3 8U A3 8P A6 C7 Voltage Stabilizer Converter Control Module 8K0959663D

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129014204

Mercedes-Benz W212 ECU Control Unit Sensor Module Airbag A2129014204

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5QS959655A

Audi A3 S3 8Y Air Module Crash Impact Sensor Unit Control ECU 5QS959655A

€70.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2218207389

Mercedes W221 Seat Headrest Display Monitor Rear Entertainment Unit A2218207389

€218.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0025426918

Mercedes W211 W220 Crash Sensor Left Right N/O/S A0025426918

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3456860

Mini Cooper R58 R59 Fuse Box Fusebox Relay Unit Module Control Unit 3456860

€398.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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