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 Kuga C520 Mk2 Body Control Module BCM Unit Fuse Box GV6T-14A073-EF

€75.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0959595E

Audi A4 B9 Rear Door Control Module ECU Left Right N/O/S 8W0959595E

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 91127929

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

€142.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0035454A

Audi A4 B9 Front Centre Dashboard Tweeter Speaker 8W0035454A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8E5035223C

Audi A4 B7 Sound Stereo Bose Amplifier 8E5035223C

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2219005300

Mercedes W221 Parktronic System Control Unit Module A2219005300

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8S0035020B

Audi TT 8S FV Audio Multimedia Radio CD Player MIB2 Head Unit 8S0035020B

€569.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8574352-3

BMW X1 E84 20d 20dX Diesel N47N Engine Control Unit ECU Kit DDE 8574352 CAS3 Key

€142.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1669001410

Mercedes ML W166 SAM Control Signal Acquisition Module ECU A1669001410

€222.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. H1BT-10C679-AC

Ford Fiesta St Mk8 Puma Negative Battery Terminal 2017-2023 H1BT-10C679-AC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2139068701-1

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Unit A2139068701

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9186571

BMW E90 LCI Wiring Loom Front Door Cable Wiring Harness Driver's Side 9186571

€23.95

Free delivery: Sep 23 – 24

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Part no. A1698204515

Media Plug Mercedes W169 W245 Multimedia Connection Cable Wire A1698204515

€23.95

Free delivery: Sep 23 – 24

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Part no. 6821205

Battery Wire Mini Cooper F55 F56 F57 IBS Negative Battery Lead Cable 6821205

€23.95

Free delivery: Sep 23 – 24

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Part no. J8A2-16C826-AB

Land Range Rover Velar L560 Bonnet Gas Strut Left Right N/O/S J8A2-16C826-AB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9253111-3

Battery Cable BMW F20 F21 F22 Red Positive Plus Pole Blow Off 9253111

€37.95

Free delivery: Sep 23 – 24

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Part no. 5WA907007K

Volkswagen Golf Cd1 Mk8 Climate Control Module ECU 2.0 Diesel 5WA907007K

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7790368

Mini Cooper One D R50 W17 Diesel Alternator Cable Starter Base B 7790368

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2124401251

Door Cable Mercedes W212 Wiring Loom Front Right O/S Driver Side A2124401251

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9377149

BMW 1 3 Series F20 F21 F30 F31 Telematic Control Unit Module 9377149

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9296981

Battery Cable Mini F55 F56 BMW X2 F39 Diesel B37 Positive Cable Wiring 9296981

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3AA971689

VW Volkswagen Passat B7 Door Wiring Adapter Loom Rear Left Right N/O/S 3AA971689

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1769051000

Mercedes W176 Front Crash Impact Air Module Sensor Unit A1769051000

€75.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3402862

BMW X3 E83 LCi Earth Cable Flow Electric Battery Negative

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. YC1A14B321AG

Ford Transit Mk6 Air Module Control Unit ECU Module YC1A14B321AG

€28.95

Free delivery: Sep 23 – 24

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Part no. 7L5907160

Porsche Cayenne 9PA Relay Module 6 Pin 462 7L5907160

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9396830

BMW F06 F12 F13 E63 Antenna Module Multi band Antenna GPS TEL Left N/S 9396830

€23.95

Free delivery: Sep 23 – 24

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Part no. FK72-13A444-ABC

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

€28.95

Free delivery: Sep 23 – 24

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Part no. YDB-500290

Land Rover Discovery 3 L318 Windscreen Rain Sensor YDB500290

€23.95

Free delivery: Sep 23 – 24

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Part no. 8576333-5

BMW F20 F30 120d 320d N47N 163HP Engine Control Unit ECU DDE 8576333 Manual

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5K0971104C

Volkswagen Golf GTI Mk7 Rear Bumper PDC Sensors Wiring Loom Harness 5K0971104C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. XH42-18C847-BB

Range Rover L322 Aerial Antenna Amplifier Control Unit Module XH42-18C847-BB

€23.95

Free delivery: Sep 23 – 24

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Part no. 4M0035454B

Audi A4 B9 Dashboard Loudspeakers Tweeter Speaker Front 4M0035454B

€28.95

Free delivery: Sep 23 – 24

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Part no. A2059051106

Mercedes W205 Antenna Aerial Amplifier Module Receiver AMP Unit A2059051106

€23.95

Free delivery: Sep 23 – 24

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Part no. A2055408012

Mercedes W205 Battery Lead Negative Wire Earth Cable A2055408012

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2229003413

Mercedes W205 W222 W253 Air Conditioning A/C Module Control Unit A2229003413

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4N0906093E

Audi Q3 F3 A8 4N 2.5 TFSI Petrol Control Fuel Pump Tank Pump Unit 4N0906093E

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7E0945095T-2

Volkswagen Transporter T6 Rear Lamp Side Tail Light Wiring Left N/S 7E0945095T

€23.95

Free delivery: Sep 23 – 24

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Part no. 7H2Q-12A650-AF

Land Rover Discovery 3 L319 Engine ECU Unit 2.7 TDV6 190HP 7H2Q-12A650-AF Manual

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CF6N-18C815-HG

Range Rover Evoque L538 Multimedia Radio CD Player Sat Nav Head CF6N-18C815-HG

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9335243

Head-Up Display Mini Cooper F54 F55 F56 F57 Hud Project Dash Screen 9335243

€189.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. HPLA-14N030-AB

Land Rover Range Rover Mk4 L405 Rear Fuse Box Board 3.0 TDV6 HPLA-14N030-AB

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129060005

Fuse Box Mercedes W212 Rear Relay Control Unit Electric Module SAM A2129060005

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2535400601

Mercedes X253 Starter Motor Wiring Harness Cable A2535400601

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BK2T19G317BD

Ford Transit Custom Mk8 Power Inventer 12V DC To 230V AC BK2T19G317BD

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2124401651

Door Cable Mercedes W212 Wiring Loom Front Left N/S Passenger Side A2124401651

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03G906016LR

Audi A4 B7 Engine Control Unit ECU 140 HP KIT 2.0 Diesel Automatic 03G906016LR

€75.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9797818

BMW X1 U11 High-Voltage Accumulator Control Unit 9797818

€203.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G8971035BG

Audi A7 4G Front Door Harness Wiring Loom Cable Driver Side 4G8971035BG

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8635811-1

BMW F20 F30 LCI 118i 318i B38 Engine Wiring Loom Harness Cables 8635811

€89.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6819653

BMW X5 F15 Fuse Box Front Body Control Module ECU BCM Unit 6819653

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 982907309C

Porsche 718 Boxster 982 2.0T DDPB 300HP Engine Control ECU 982907309C Automatic

€484.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06M907309H-1

Audi RS5 F5 2.9 TFSI DECA Quattro 450HP Engine Unit ECU Kit 06M907309H Automatic

€788.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2074401208

Mercedes W207 Parking Sensor Wiring Loom Cable Harness Rear PDC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8506666-5

Mini One R56 LCI 90HP N47N Diesel Engine ECU Control Unit DDE 8506666 Manual

€89.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469008115

Mercedes W176 W246 Gearbox Transfer Case Control Module Unit ECU A2469008115

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8U0614109B

Audi RS Q3 8U ABS Pump Modulator Control Unit 2.5 TFSI Petrol 8U0614109B

€379.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. MB3T-14B060-ABE-1

VW Volkswagen Amarok NF Engine Wiring Loom Harness Cable MB3T-14B060-ABE

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2518800

Ford Kuga C482 Front Collision Detection Windscreen Camera Unit LV4T-19406-CF

€85.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. YC1U-11000-AF-2

Ford Transit Mk6 Starter Motor Engine Actuator Diesel 2.4 TDCi YC1U-11000-AC

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9178791

BMW F01 F02 F10 F11 Cable Wiring Set ARS Valve Block 9178791

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4E0971845

Audi A8 D3 Rear Fuse Relay Box Plate Mounting Right O/S 4E0971845

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5A3AF30

BMW F40 F44 DAB Audio Receiver Module Harman Becker 5A3AF30

€108.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. GV6T-14D599-AC

Ford Kuga Mk2 Blind Spot Control Unit Module Radar Sensor GV6T-14D599-AC

€75.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CV44-S023B02-AAW

Ford Kuga C520 Fuse Box Cover Panel Lid Top Housing CV44-S023B02-AAW

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8V5T-14301-AA

Ford Fiesta Mk7 Negative Minus Terminal Battery Cable Wire Loom 8V5T-14301-AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6803169

Air Con Module BMW F20 F30 F31 Mini F55 F56 Air Conditioning A/C Unit 6803169

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9145172

BMW E90 E91 E92 E93 LCI Battery Bracket Lower Section Box 9145172

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9396828

Antenna Module BMW F06 F12 F13 E63 Rear Multi-band Antenna GPS TEL Right 9396828

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8576333-3

BMW F20 F30 F32 120dX 320dX 420dX Diesel N47N 184HP ECU Kit DDE 8576333 Key FEM

€275.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8X0971687D

Audi A1 8X Rear Door Harness Left Right N/O/S Wiring Loom Cable 8X0971687C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3Q0905861C

Audi A4 B9 A5 F5 Steering Column Lock Mechanism Control Unit 3Q0905861C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W8947356

Audi A5 F5 Front Door Card Panel LED Module Light Unit Wiring Harness 8W8947356

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059006330

Mercedes W205 SAM Module Front Body Comfort Control Unit ECU A2059006330

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9079001403

Mercedes Sprinter W907 Module Control Unit Radar Sensor A9079001403

€123.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9459673-1

Seat Module BMW X4 F26 F20 F30 Front Driver Side Control Unit ECU 9250421

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8578945-2

BMW F20 F21 F30 F31 116d 316d N47N 116HP ECU Kit DDE 8578945 Key FEM Lock Manual

€341.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7P0971235

Porsche Cayenne 92A High Voltage Wiring Harness Battery Cable 7P0971235

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7CC971120AK

Volkswagen Crafter Mk2 SY Front Door Wiring Loom Harness Left N/S 7CC971120AK

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1121510001

Mercedes W203 W211 W220 W221 Starter Motor M113 Petrol Engine A1121510001

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1699000200

Mercedes-Benz A B W169 W245 Front Right Door Control Unit Module A1699000200

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7P5919475H

Porsche Cayenne 92A PDC Parking Sensor Control Module Unit 7P5919475H

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G8971036D

Audi A7 4G Front Door Harness Wiring Loom Cable Passenger Side 4G8971036D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8584817

BMW G20 G21 G01 G02 Wiring Harness Engine Glow Plug Module 8584817

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9323417

BMW X5 F15 Door Wiring Harness Light Package Adapter Cable 9323417

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7N0971691AB

Volkswagen Sharan 7N Door Wiring Cable Rear Left N/S 7N0971691AB

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7541335-8

BMW X3 E83 M54 2.5i 192HP Engine Control Unit ECU DME 7541335 Manual

€237.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9807756

Mini Cooper R60 Wiring Passenger Loom Front Door Cables Left N/S 9807756

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BM5T-15K866-AN

Ford C-Max Mk2 PDC Parking Sensor Control Unit Module BM5T-15K866-AN

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2Q0971537AG

Volkswagen Polo GTI AW1 Battery Cable Grounding Line Wiring Harness 2Q0971537AG

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6956748

BMW E87 E90 E91 LCI PDC Ultrasonic Parking Sensor Tiefgruen Green A43 6956748

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. GV41-13405-DD-2

Ford Kuga C520 Tail Light Rear Lamp Harness Loom Wire Left N/S GV41-13405-DD

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6519000603-3

Mercedes W205 C205 OM651.921 170HP Engine Control ECU Kit A6519000603 Manual

€332.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. LR014265

Land Rover Discovery 4 L319 Fuse Box Fusebox Fuse Panel Cover LR014265

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6942551

BMW E87 E90 E91 Front Left N/S Seat Lordosis Pad Adapter Lead Wiring

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9232164

BMW X3 F25 Gateway Control Module Unit ECU 9232164

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8485064

BMW G20 LCI Starter Motor Positive Battery Cable B48B20A Petrol 8485064G20

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2044402701

Mercedes W204 Dynamic Suspension Damper Shock Absorber Module ECU A2044402701

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4M1959593D

Audi A6 C8 Door Control Module Unit ECU Front Driver's Side 4M1959593D

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

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