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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Engine Wiring BMW F20 F21 F30 F31 N20 Cable Loom Harness 7634056

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6782372

BMW X1 X3 Z4 E83 LCI E84 E89 E90 E91 E92 Speed Sensor Cluster 6782372

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8708257

Head Unit BMW F20 F21 F22 F30 F31 LCI Sat Nav Radio Media Navigation 8708257

£303.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 8321087

BMW 5 SERIES E60 ELECTRIC SEAT Height Adjust 0390203234 8321087

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9267456

Control Unit BMW F10 F11 Body Module ECU JBBFE IIIR V2 PL6 ECU 9267456

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9253111-1

BMW 1 2 Series F20 F21 F22 Positive Plus Pole Battery Blow Cable Part 9253111

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9316575

BMW 1 2 Series F20 F21 F22 Battery Cable Lead Positive Underfloor 9316575

£65.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6929556

BMW E65 E66 Driver's Seat Air Module Sensor Control Unit Module 6929556

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9146651

BMW X5 X6 E70 E71 Board Monitor Sat Nav System Screen 8,8" 9146651

£56.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6887829

BMW M4 F32 F80 F82 VDC Adaptive Sport Suspension Module Control Unit 6887829

£42.95

Free delivery: Aug 28

If paid before 14:00

Part no. rhd-8513423

BMW 3 SERIES E90 E91 LCI 316d 318d N47N Engine Wiring Loom Harness DDE 8513423

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9289580

Dashboard Monitor BMW X5 E70 X6 E71 Onboard Display Screen CID 8,8" 9289580

£94.95

Part no. 9343210

Radio CD BMW E81 E87 E90 E91 E92 LCI Professional DAB 9243925

£180.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9317175

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9317175

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6958526

BMW 5 X5 X6 Series E60 E61 E70 E71 F07 F10 F11 Seat Adjustment Switch Right O/S

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8686893

BMW 3 5 7 F30 LCI G11 G30 Hybrid High Voltage Battery Safety Box 7,6 kWh PHEV

£208.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7634058

BMW F20 F30 Engine Automatic Gearbox Module Wiring Cable Loom Harness 7634058

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6956672

BMW E63 E63N LCI Centre Console Switch Centre DTC PDC 6956672

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9350065

Battery Cable BMW F90 M5 F91 M8 G11 G30 Positive Wiring Plus Pole Red 9350065

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9875929

BMW F20 F21 F22 F23 LCI DAB Navigation Head Control Unit Module Business 9875929

£142.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9330952

BMW F12 F13 Air Control Module Control Unit ACSM4 9330952

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8387540

BMW X3 E83 Positive B Battery Terminal Point Case 8387540

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6912244

BMW Z4 E85 Rear Bumper Antenna Mounted Aerial Unit FM 6912244

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6970890

BMW E65 E66 E67 Sensor B-pillar Air Module Left N/S 6970890

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9344677

BMW 2 3 Series F22 F80 M3 F82 M4 Wiring Loom Harness Rear Trunk Lid 9344677

£56.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8798189-1

Basic Head Unit BMW F45 X1 F48 Mini F55 F56 Sat Navigation Radio Stereo 8798189

£180.95

Free delivery: Aug 28

If paid before 14:00

Part no. rhd-9209796

Head-Up Display BMW F10 F11 Hud Trim Panel Cover Frame Dash Screen 9192921

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9283247-1

BMW X1 E84 Radio Stereo CD Player Navigation Nav Head Unit 9283247

£56.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6970086

BMW 5 6 Series E60 E61 E63 LCI Cable Set Start / Stop Switch Wiring Loom 6970087

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8512047

BMW E90 E91 LCI N47N 320d ed ECU KIT DDE CAS 3 Key 8512047 Manual

£123.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6870539

BMW F10 F11 F12 F13 Parking AID Control Module ECU 6870539

£75.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8699955

Engine Control Unit BMW F20 F21 F22 118i 218i B38 136HP ECU DME 8699955 Manual

£94.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6986980

BMW Z4 Series E85 Cable Loom Driver's Door Wiring Harness 6986980 6986976

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9322690

BMW F32 F82 M4 Hifi Audio Sound System Speaker AMP Amplifier Module 9322690

£127.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6950093

BMW X5 Series E70 Flat Cable Wiring Wire CAS Start Stop 6950093

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. rhd-7572358

BMW 3 Series E90 E91 320i N46 Wiring Loom Harness Engine Gearbox Module 7572358

£32.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9350003-1

Safety Control Unit BMW F01 LCI F07 F10 F11 F25 Air Module Bag ECU 9350003

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6945387

BMW X3 X5 Series E53 E83 E87 Hands-free Electronics Charging Module MULF 6945387

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9227179-1

BMW 1 Series E87 Body Control Module ECU L2 PL2RR JBBFE Junction Box 9227179

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A5D3C0

Keyless Entry BMW F40 G20 G21 G30 G31 Comfort Access Antenna 5A5D3C0

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7592508

BMW X5 E70 E90 LCI F20 Engine Wiring N55 Valvetronic Servomotor Cable 7592508

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9461797

BMW F90 M5 G01 G11 G30 KaFAS Camera Speed Control ECU Module Unit 9461797

£56.95

Free delivery: Aug 28

If paid before 14:00

Part no. rhd-9188741

BMW X5 X6 Series E70 E71 Cable Loom Wiring Set Seat Driver's Side 9188741

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 2753025

Mini Cooper R55 R56 R57 R58 Wiring Heated Seat Loom 2753025

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8573116

BMW 5 Series F10 F11 LCI B47 Cable Alternator Starter 8573116

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7823973-1

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 7823973 CAS3 + Key

£142.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7519051

BMW 7 Series E65 E66 E67 Electric valve 735i 745i 735Li 745Li 745LiS

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9320213

BMW F30 F31 F32 Top Hifi Audio System AMP Amplifier Harman Kardon 9320213

£474.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9170702

BMW 5 Series E60 E61 LCI CCC CD Sat Nav Head Player System Controller 9170702

£284.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9148264

Seat Module BMW E87 E90 E91 E92 Control Unit ECU 9148264

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6938079

BMW E81 E87 E90 E91 PDC Speaker Trigger Contact 6969139 6938079

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. rhd-9271762

BMW 5 6 F10 F11 F12 Cable Set Power Steering Rack Box Wiring Harness 9271762

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6820931

Telematics Module BMW X1 F48 F20 F30 Bluetooth GPS Control Unit ECU 6820931

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9129850

BMW X3 X5 Series E83 E53 Telematics Control Unit Module 9129850

£47.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6958446

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

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9229007

BMW F10 Antenna Amplifier Diversity 868 MHZ 9229007

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7803369-1

BMW E60 E90 E91 330d 530d M57N2 ECU Engine Kit DDE 7803369 CAS3 + Key Automatic

£313.95

Free delivery: Aug 28

If paid before 14:00

Part no. rhd-9262752-3

Display Cover BMW F20 F21 Information Screen 6,5" Trim Panel Housing 9262752

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6970337

BMW E92 Seat Backrest Adjustment Adapter Lead Cable 6970337

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9137055

BMW E61 E63 Panoramic Sliding Sunroof CAN Bus Module Control Unit 9137055

£66.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9315080

BMW X3 F25 Window Lifter Switch Driver's Side Wiring Harness Loom Cable 9315080

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8618444

BMW F30 LCI 330e B48X Cell Module Connector 8618444 61278618444

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7545046

BMW 1 3 Series E87 E90 N45 116i 316i Petrol ECU Kit DME CAS 2 Key 7545046

£151.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9181453

BMW 1 X4 X5 Series F20 F21 F25 F26 Antenna Aerial Diversity Trap Circuit 9181453

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9313638

BMW F30 F31 F80 M3 Front Passenger Wiring Loom Harness Cables 9313638

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8510829-4

BMW E90 E91 LCI N47N 320ed 320d ed 163HP ECU KIT DDE 8510829 CAS3 + Key Manual

£75.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9287441

BMW F21 F22 F23 Wiring Loom Harness Passenger Side 9287441

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 130002613-1

BMW 5 X5 7 Series E60 E61 E65 E70 Longitudinal Seat Adjusment Drive Motor

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8654632

BMW F40 F44 F45 Mini Cooper F55 F56 Engine Starter Motor Positive Battery Cable

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A0B497

Telematics Module BMW F40 F44 G20 Telephone Control Unit ATM ECE 4G 5A0B497

£170.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8582279-3

BMW F20 F30 F32 120d 320d 420d Diesel N47N 184HP ECU Kit DDE 8582279 Keys FEM

£189.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 6805061

BMW F45 F46 Mini F55 F56 F57 Parking Assistant PDC Control Unit Module 6805061

£47.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9220695

BMW X5 X6 E70 E71 Control Unit Module Top Rear Side View Camera 9220695

£56.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9314234

BMW F20 F21 F22 F30 F31 F32 Body Control Module Unit FEM ECU LR01 9314234

£94.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6820234

Air Conditioning Module BMW F20 F21 F30 F31 A/C Control Unit 6820234

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. rhd-7564402

BMW E90 320si N45 Petrol Engine Wiring Loom Cable Harness 7564402

£75.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6961134

BMW 3 Series E90 Xenon Footwell Light Module Control Unit ECU PL2 FRMFA 6961134

£94.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 9286940

BMW 7 Series F01 LCI ECU Body Control Module Junction Box JBBFEIII V5 9286940

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6973117

BMW 1 3 Series E81 E87 E90 E91 E92 E93 Parking Control Module Unit PDC 6973117

£85.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9350002

BMW F01 F07 F10 F11 X3 F25 Control Unit Air Module ECU Unit Continental 9350002

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9244188

Telematics Module BMW F01 F07 F10 Bluetooth Combox Telematik ECU 9244188

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7565300-7

BMW 1 3 Series E87 E90 E91 N46 118i 318i ECU Kit DME 7565300 CAS3 Key Manual

£284.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7799854-1

BMW 1 3 Series E87 E90 M47N2 118d 318d 122HP ECU KIT DDE + CAS2 + Key 7799854

£123.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7636937

Ping Sensor BMW F20 F31 LCI Mini F55 F56 Engine Block Knock Sensor 7636937

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6960381

BMW 5 Series E60 E61 Airbag ECU Control Unit Gateway Module 6960381

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9350003

Safety Control Unit BMW F01 LCI F07 F10 F11 F25 Air Module Bag ECU 9350003

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7374942

BMW F20 F21 F30 F31 Fuel Pump Control Unit Module 7374942

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9186170

BMW 5 6 Series E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit 9186170

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9259467

Fuse Box BMW X3 F25 Power Distribution Control Unit Module Front 9259467

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7805349-2

BMW X3 E83 LCI M47N2 2.0d 150HP ECU Kit DDE EWS4 Key 7805349 Manual

£237.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9181455

BMW X1 Series E84 Antenna Aerial Noise Suppression Filter 9181455

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9247474-1

BMW E93 LCI ECU Body Control Module H3 Junction Box PL2RR JBBFE IIIR 9247474

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 4030026

BMW Z4 E85 Xenon Headlight Resistor Ballast Relay Module Unit 4030026

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 3427751

BMW X3 Series E83 Wiring Passenger Side Loom Front Door Cables 3427751

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6819838

BMW F30 LCI G11 G30 High Voltage Battery Charging Unit Module 6819838

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. rhd-7803778

Engine Wiring BMW E60 E61 LCI 520d N47 Automatic Gearbox Loom Cable 7803778

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6913824

BMW 7 Series E65 E66 Front Bumper PDC Loom Cables Wiring Set 6913824

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8512498-1

BMW X1 E84 20dX N47 177HP Engine Control ECU Kit DDE 8512498 Automatic

£237.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9286157

BMW X3 F25 Light Module Control Footwell Lightning ECU Unit FRM3 9286157

£28.95

Free delivery: Aug 28

If paid before 14:00

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