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 1 2 3 Series F20 F21 F22 F30 F31 F32 Connecting Wire Sat Nav Champ/Mask-CID

€32.95

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Part no. 9324784

BMW F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9324784

€66.95

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Part no. 9173686

BMW X3 Z4 E83 E85 E86 Radio Business CD Player 9173686

€189.95

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Part no. A2129001227

Gateway Control Unit Mercedes W204 W212 Gateway Module ECU VST A2129001227

€23.95

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Part no. A0009820212

Mercedes W176 W212 W246 Voltage Converter Inverter Power Distributor A0009820212

€23.95

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Part no. 9261591

BMW F20 F21 F30 PDC Ultrasonic Parking Sensor PDC Front Imperial Blau Blue

€23.95

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Part no. A2469000012

Mercedes W176 W246 Radio Head Unit COMAND Navi Player Control Unit A2469000012

€47.95

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Part no. 6962678

BMW E81 E87 E91 Switch Cluster Steering Column Wiper Stalk 6962678

€23.95

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Part no. 4F0907279

Audi A6 C6 Power Supply Module Comfort Control Unit ECU 4F0907279

€23.95

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Part no. 7595179

BMW E81 E87 LCI E90 E91 Petrol N43 Engine Control Unit ECU DME 7595179 Manual

€85.95

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Part no. 4F0915519

Volkswagen Polo Touareg Audi A4 A6 A7 A8 Battery Overload Protection 4F0915519

€23.95

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Part no. 9276099

BMW F01 F10 Diversity Aerial Antenna Amplifier Module DAB 9276099

€35.95

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Part no. A2129003508

Mercedes W207 W906 Fuel Pump Control Unit Module ECU A2129003508

€23.95

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Part no. 3456995

Mini Cooper One R55 R56 R57 LCI R60 Radio Boost CD Player Unit Head 3456995

€237.95

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Part no. 9177978

BMW E92 ECU Body Control Module Junction Box L1 PL2 JBBFE 9177978

€23.95

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Part no. 9196669

CD Changer 6 Disc BMW E81 E87 E90 E91 E92 Without Magazine 9196669

€32.95

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Part no. A2125420018-TNG

Mercedes W204 Parking Sensor PDC Distance Front Tenorite Grey - 755 A2125420018

€23.95

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Part no. 4F0959651

Audi A6 C6 Front Impact Sensor Safety Crash Detection Module Unit 4F0959651

€23.95

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Part no. 6901469-1

2X Relay BMW E60 E87 E90 F10 F30 4 Pin Tyco Set Black 6901469

€23.95

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Part no. 9276064

BMW X3 F25 Antenna Aerial Diversity Amplifier Unit 868 MHZ 9276064

€23.95

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Part no. 7592508

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

€32.95

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Part no. A0009068802

Alternator Generator Mercedes Sprinter W906 Engine Diesel 180A 14V A0009068802

€142.95

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Part no. 9350995

BMW F10 F20 F30 Reversing Camera Rear View Control Unit 9350995

€75.95

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Part no. 3416765

Mini Cooper One R56 Antenna Amplifier Aerial Diversity Module 3416765

€23.95

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Part no. A1179008600

Airbag Module Mercedes w176 Air Bag SRS Control Unit ECU A1179008600

€42.95

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Part no. 7796892

BMW E60 E61 X3 E83 X5 E70 X6 E71 Starter Motor Diesel 7796892

€23.95

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Part no. 3428715

MINI Cooper One R56 R55 R58 R60 R61 Airbag ECU Control Module 3428715

€23.95

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Part no. 7614083

BMW F20 F21 F22 F30 F31 F32 LCI Earth Ground Cable Battery Wiring 7614083

€23.95

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Part no. 6862756

BMW F20 F21 F22 F30 F31 ECU ICM Plus Control Unit Module 6862756

€23.95

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Part no. 7316535-3

BMW F06 F13 Sliding Sunroof Drive Motor Unit Webasto 7316535

€47.95

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Part no. 9389657

BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9389657

€23.95

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Part no. 9809354

Mini R55 R56 R60 R61 Air Module ECU Control Unit Module 9809354

€23.95

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Part no. A2129018508

Mercedes W212 Air Bag Control Unit ECU AirBag Sensor Module A2129011105

€28.95

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Part no. 6865298

BMW F20 F21 F30 F31 ECU ICM Plus Control Unit Module Airbag 6865298

€23.95

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Part no. A0009003101

Mercedes W204 W212 W221 Fuel Pump Module Control Unit A0009003101

€23.95

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Part no. 9181965

Mini Cooper One Cabrio R50 R52 Air Con A/C Conditioning Pipe Hose Evaporator

€23.95

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Part no. 7H0907652A

Audi Q7 4L Yaw Rate Speed Sensor Module 7H0907652A

€23.95

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Part no. A2038201485

Mercedes W203 Door Control Module Front Right O/S A2038201485

€23.95

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Part no. 7605060

BMW F20 F21 F30 LCI DENSO 170A Alternator Generator 7605060

€42.95

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Part no. 7640508-2

BMW 1 3 4 Series F20 F21 F30 F31 F32 F33 Cooling Fan Control Unit Radiator

€23.95

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Part no. 6843898

BMW F20 F21 F22 F30 F31 F32 Body Control Module Unit FEM ECU LR01 6843898

€66.95

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Part no. 9338800

iDrive Control Unit BMW F10 F20 F30 Touch Controller Module ECU 9338800

€23.95

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Part no. 7800167

BMW E70 LCI E90 E91 LCI F10 F11 N57 Lead Preheater Wiring System Diesel 7800167

€23.95

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Part no. 7600020-7

Mini R55 R56 R57 N12 DME Petrol Engine Control Unit ECU 7600020

€89.95

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Part no. A1668210151

Impact Sensor Mercedes W166 W176 W246 Crash Sensor A1668210151

€23.95

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Part no. A0025421319

Mercedes W204 Genuine Universal In Car Black Relay 4-Pin Tyco A0025421319

€23.95

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Part no. 9258170

BMW 1 3 E81 E87 E90 E91 E92 LCI Radio CD Professional Control Unit 9258170

€142.95

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Part no. 7258278

Headlight Module BMW F07 F10 LEAR TMS Headlamp Control Unit Module 7258278

€61.95

Free delivery: Sep 10 – 11

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Part no. A0045428718-1

Mercedes W203 W211 Parking Distance Sensor PDC Iridium Bright Silver

€23.95

Free delivery: Sep 10 – 11

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Part no. 7490465

BMW F10 F20 F30 F31 Mini F55 F56 Seat Heating Module Control Unit ECU 7490465

€23.95

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Part no. 9866982

BMW F20 F22 F30 F32 REM Rear Electronic Module Fuse Box Control Unit V5 9866982

€23.95

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Part no. 8515900

BMW X5 E70 LCI X6 E71 F01 F02 Starter Motor N57 Engine 8515900

€23.95

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Part no. 9343259

B+ Distribution Box BMW X3 F25 Battery Power Red Rear Control Unit 9206140

€37.95

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Part no. 9803844-1

Mini Cooper Countryman R58 R60 R61 Aerial Roof Antenna Base Module 9803844

€23.95

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Part no. 6799677

BMW F11 Touring Rear Axle Air Suspension Control Unit ECU Module 6799677

€23.95

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Part no. 9229875

BMW 3 Series E90 LCI Body Control Module H1 PL2RR JBBFE IIIR 61359229875 9229875

€75.95

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Part no. 8588448

BMW 1 3 Series F20 F21 F30 LCI Wiring Harness Engine Glow Plug Module 8588448

€23.95

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Part no. 9207913

BMW F20 F21 F22 F30 F31 F32 F33 F36 G30 Fan Motor Relay 9207913

€23.95

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Part no. 1388911

BMW E36 E38 E21 E85 R52 R57 Change-Over Contact Relay Violet 1388911

€23.95

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Part no. 4H0959655C

Audi A6 C7 2.0 TDI SRS Air Module Control Unit Sensor ECU 4H0959655C

€23.95

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Part no. 9274570

BMW F20 Head Unit Navigation GPS Sat Nav Infotainment DAB High F10 F30 9274570

€113.95

Free delivery: Sep 10 – 11

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Part no. 7798012

BMW 1 3 5 Series E60 E87 LCI E90 E91 N47 Preheater System Starter Cable Lead

€23.95

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Part no. A6394407810

Wiring Loom Mercedes W639 Vito Cable Front Door Left Right N/O/S A6394407810

€23.95

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Part no. 7515029

Mini Cooper One R50 R52 Petrol W10 Compact Alternator 105A 7515029

€47.95

Free delivery: Sep 10 – 11

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Part no. A2048204697

Mercedes W204 Dashboard Dash Navigation Central Display Screen Monitor

€142.95

Free delivery: Sep 10 – 11

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Part no. 6906618

BMW E60 E61 E63 E64 M5 M6 Power Distribution Fuse Box Rear 6906618

€23.95

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Part no. 8583657-1

BMW F20 E90 LCI Mini R56 LCI Glow Plug Wiring Wiring Harness Engine Module

€23.95

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Part no. 8574102

BMW F20 F21 F30 F31 F32 Starter Motor Engine Actuator N47N Diesel 8574102

€23.95

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Part no. 9119357

BMW 1 3 5 E60 E81 E87 E90 E91 Mini R55 R56 DAB Radio Tuner Module 9119357

€23.95

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Part no. 7796125

Alternator BMW X5 E70 X6 E71 M57N2 Generator 170A 170AMP 14V VALEO 7796125

€70.95

Free delivery: Sep 10 – 11

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Part no. 7811163

BMW 1 3 5 Series F10 F20 E90 LCI Wiring Harness Engine Glow Plug Module 7811163

€23.95

Free delivery: Sep 10 – 11

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Part no. A0009067702

Alternator Generator Mercedes W204 W207 W212 Engine Diesel 180A 14V A0009067702

€85.95

Free delivery: Sep 10 – 11

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Part no. 8509722-1

Control Unit Box BMW F20 F21 F22 F30 F31 Engine Ecu Cover 8509722

€23.95

Free delivery: Sep 10 – 11

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Part no. A0035422819

Battery Relay Mercedes W176 W246 W447 Cut Off Module Control Unit A0035422819

€23.95

Free delivery: Sep 10 – 11

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Part no. 1472984

Mini R50 R52 R53 R55 R56 R57 R58 R59 R60 R61 5-Pin Black Relay Wiper 1472984

€23.95

Free delivery: Sep 10 – 11

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Part no. 9176069

BMW E60 E63 E64 KBM Basis Body Control Module ECU Control Unit 9176069

€23.95

Free delivery: Sep 10 – 11

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Part no. 4M0959651

Front Crash Impact Audi A4 B9 A5 F5 Air Module Sensor Unit 4M0959651

€23.95

Free delivery: Sep 10 – 11

If paid before 14:00

Part no. A2129009729

Mercedes W176 W207 W212 Keyless Door Lock Module ECU Unit A2129009729

€23.95

Free delivery: Sep 10 – 11

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Part no. 6807633

Control Unit BMW F01 F07 F10 F11 F25 Air Module ECU Unit Continental 6807633

€42.95

Free delivery: Sep 10 – 11

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Part no. 6926435

BMW 1 3 Series E87 E90 Mini R56 R57 Seat Control Unit Module Heating 6926435

€23.95

Free delivery: Sep 10 – 11

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Part no. 9150889

BMW E81 E87 LCI Front PDC Parking Distance Control Loom Wiring 9150889

€47.95

Free delivery: Sep 10 – 11

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Part no. A1728100011

Mercedes W176 W204 W212 Navigation Control Unit Module NTG 4.5 A1728100011

€23.95

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Part no. 6952914

Wiring Loom BMW E65 E66 Cables Rear Bumper PDC 6952914

€23.95

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Part no. A2129004203

Mercedes W212 Boot Lid Control Unit Trunk Lid Module A2129004203

€23.95

Free delivery: Sep 10 – 11

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Part no. 7794908

Preheater System Lead BMW E87 E90 E91 Diesel 7794908

€23.95

Free delivery: Sep 10 – 11

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Part no. A0009006713

PDC Module Mercedes W176 W246 Parking Assist Distance Control Unit A0009006713

€23.95

Free delivery: Sep 10 – 11

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Part no. A9065420518

Mercedes-Benz W639 W906 ESP Yaw Rotation Rate Sensor Control Unit A9065420518

€23.95

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Part no. 3414122

BMW X3 E83 Sensor Air Module Front Impact Crash Sensor 3414122

€23.95

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Part no. 9262753

BMW F30 F31 F80 M3 Dashboard Central Information Display Screen 6,5" 9262753

€56.95

Free delivery: Sep 10 – 11

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Part no. 411033

iPod Most Interface BMW E60 E65 E81 E87 E90 Module Alpine 0411033

€23.95

Free delivery: Sep 10 – 11

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Part no. 9350707

BMW F15 I01 Mini F55 F56 F57 PDC Module Parking Assistant Control Unit 9350707

€23.95

Free delivery: Sep 10 – 11

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Part no. 6971961

BMW E87 ECU Body Control Module L2 ECU Junction Box 6971961

€23.95

Free delivery: Sep 10 – 11

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Part no. 9153802

BMW X5 E70 Footwell Light Module Control Unit ECU FRM II NSW Lear 9153802

€146.95

Free delivery: Sep 10 – 11

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Part no. 6901469

BMW E60 E87 E90 F10 F30 Relay Electrical Unit Black 4 Pin Tyco 6901469

€23.95

Free delivery: Sep 10 – 11

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Part no. 8638551

BMW F20 F21 F22 F30 F32 LCI Integrated Supply Module Unit 8638551

€23.95

Free delivery: Sep 10 – 11

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Part no. 9146710

BMW X3 Z4 E83 E85 E86 Radio Business CD Player Control Unit 9146710

€94.95

Free delivery: Sep 10 – 11

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Part no. 3449504

Mini Cooper One R55 R56 Electrical System Fuse Distribution Box 3449504

€23.95

Free delivery: Sep 10 – 11

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Part no. 6964607

BMW 1 3 X1 SERIES E81 E87 E90 Control Unit Airbag ECU NO CRASH DATA 6964607

€23.95

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Part no. A6394460446

Mercedes Vito W639 PDC Parking Distance Control Unit Module ECU A6394460446

€32.95

Free delivery: Sep 10 – 11

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