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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VW Volkswagen Touareg 7L Transfer Box Control Unit Module ECU 0AD927755BE

€23.95

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Part no. 9296780

BMW F20 F21 F30 F31 Control Unit Air Conditioning Module 9296780

€23.95

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Part no. A9067601304

Mercedes-Benz Sprinter W906 Front Right Door O/S Handle Bowden Pull Cable

€23.95

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Part no. 1K0971228N

Audi A3 VW Golf Caddy Battery Lead Positive Cable Plus Pole Wiring 1K0971228N

€23.95

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Part no. 9153806

BMW F01 F02 Rear Heater Blower Motor Resistor 9153806

€23.95

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Part no. 8K0959792R

Audi Q5 8R Door Module Control Unit Front Passenger Side 8K0959792R

€23.95

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Part no. A9067601204

Mercedes Sprinter W906 Front Left Door N/S Handle Bowden Pull Cable A9067601204

€23.95

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Part no. 9141809

Onboard Display BMW E60 E63 E64 E90 Dashboard Dash Monitor Screen 8.8" 9141809

€37.95

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Part no. A1698206726

Mercedes-Benz W245 ECU Control Unit Sensor Module Airbag A1698206726

€23.95

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Part no. 09K927750K

VW Volkswagen Transporter T5 ECU 2.5 Diesel Auto Gearbox Control Unit 09K927750K

€23.95

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Part no. 7598857

Mini R55 R56 Cooper S EGS Module Automatic Gearbox ECU Control Unit 7598857

€80.95

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Part no. LR007522

Land Rover Discovery 4 L319 Glow Plug Wire Wiring Cable Right O/S 4R8Q-12A378-BE

€23.95

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Part no. 9302937

BMW F01 LCI Cable Door Rear Left Right N/O/S Wiring Harness 9262882

€23.95

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Part no. A0009006612

Rear Module Mercedes C205 W205 Fuel Pump Control Unit A0009006612

€23.95

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Part no. 1K0937124P

Audi A3 S3 8P Engine Bay SAM Relay Fuse Box Module Control Unit ECU 1K0937124P

€23.95

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Part no. 8387540

BMW X3 E83 Positive B Battery Terminal Point Case 8387540

€23.95

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Part no. 7852144

BMW F10 M5 F12 M6 Ignition Engine Wiring Harness Ignition Module Cyl.1-4 7852144

€66.95

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Part no. 9330952

BMW F12 F13 Air Control Module Control Unit ACSM4 9330952

€23.95

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Part no. 8E0971687L

Audi A4 B7 Door Harness Loom Cable Wiring Rear Left Right N/O/S 8E0971687L

€23.95

Free delivery: Nov 12 – 13

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Part no. 1790385

Ford S-Max Alternator Generator Unit 2.2 TDCi Diesel Engine 6G9N-10300-ADB

€66.95

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Part no. 8570845

Mini Cooper F55 F56 F57 F60 Starter Motor Engine 8570845

€23.95

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Part no. 2447799

BMW M6 F13 X3 F25 F32 F33 Bluetooth Telematic Control Module Unit 2447799

€66.95

Free delivery: Nov 12 – 13

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Part no. 7793200

BMW X5 E70 X6 E71 E90 E90N E91 E92 E93 Cable Alternator Starter 7793200

€23.95

Free delivery: Nov 12 – 13

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Part no. A9065400341

Battery Cable Mercedes Sprinter W906 Negative Lead Wiring Harness A9065400341

€23.95

Free delivery: Nov 12 – 13

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Part no. A2059006047

SAM Module Mercedes W205 GLC X253 Rear Comfort Control Unit ECU A2059006047

€127.95

Free delivery: Nov 12 – 13

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Part no. 8T0959792G

Audi A4 B8 Front Door Lock System Module Right O/S Control Unit ECU 8T0959792B

€23.95

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Part no. 9374508

BMW F20 F21 F30 F31 REM Rear Electronic Module Fuse Box Control Unit V3 9374508

€23.95

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Part no. 5N0971235A

Audi A3 8P VW Golf MK6 Battery Negative Earth Cable Harness Wiring 5N0971235A

€23.95

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Part no. A0044460310

Mercedes W204 C207 Eletronic Transmission Unit Gearbox Control SBW A0044460310

€199.95

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Part no. 8635813

Engine Wiring BMW F20 F30 F31 LCI B38 Valvetronic Servomotor Cable Loom 8635813

€23.95

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Part no. 6970337

BMW E92 Seat Backrest Adjustment Adapter Lead Cable 6970337

€23.95

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Part no. 8P0035186G

Audi A3 8P Multimedia Radio CD Player Head Unit 8P0035186G

€23.95

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Part no. 6941445

BMW E63 E64 Bluetooth Cable Hands Free Telephone Microphone Unit 6941445

€23.95

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Part no. 1525794

Ford Mondeo Mk4 Starter Motor 12V 2.0L Petrol 6G9N-11000-AB 1525794

€23.95

Free delivery: Nov 12 – 13

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Part no. A6519007500-13

Mercedes W212 E250 CDI 651.924 204HP Engine Unit ECU Kit A6519007500 Key Lock

€313.95

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Part no. 9805670

Mini R60 Countryman Door Window Lifter Regulator Motor Front Right O/S

€56.95

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Part no. A1769051000

Mercedes W176 Front Crash Impact Air Module Sensor Unit A1769051000

€75.95

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Part no. 3452226

BMW X3 Series E83 LCI Wiring Harness Engine Gearbox Module 3452226

€32.95

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Part no. 8385159

BMW 3 X3 Series E46 E83 Battery Cable Holder Mounting B Base 8385159

€23.95

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Part no. 7607705

Mini Cooper One R56 N16 Automatic Gearbox Basic Control Unit EGS 7607705

€51.95

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Part no. 6956505

BMW E60 E61 E63 E64 Rear Power Distribution Fuse Relay Box 6956505

€23.95

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Part no. 6C1T-14B056-AD

Ford Transit Mk7 Airbag Module ECU Control Unit Air Bag 6C1T-14B056-AD

€23.95

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Part no. 8V5T-14301-AA

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

€23.95

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Part no. A9079001403

Mercedes Sprinter W907 Module Control Unit Radar Sensor A9079001403

€123.95

Free delivery: Nov 12 – 13

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Part no. CX23-12C520-PA

Land Rover Discovery L319 3.0d 256HP Engine Control ECU CX23-12C520-PA Automatic

€66.95

Free delivery: Nov 12 – 13

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Part no. 5M0907357G

Audi Q3 8U Headlight Range Control Unit Module ECU 5M0907357G

€23.95

Free delivery: Nov 12 – 13

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Part no. 9381086

Amplifier BMW F06 GT F10 F13 F15 Audi Control Unit Active Sound Design 9381086

€42.95

Free delivery: Nov 12 – 13

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Part no. 7401878

BMW F30 F31 LCI Front LED Headlight Vertical Actuator Left Right N/O/S 7401878

€37.95

Free delivery: Nov 12 – 13

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Part no. 6820464

Mini Cooper F55 F56 Control Unit Module Active Sound Design Amplifier 6820464

€23.95

Free delivery: Nov 12 – 13

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Part no. 8W0971687AQ

Audi A4 B9 Door Wiring Loom Harness Rear Left Right N/O/S 8W0971687AQ

€32.95

Free delivery: Nov 12 – 13

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Part no. 7120204

BMW E93 Cable Wiring Loom Harness Hydraulic Pump 7120204 7191362

€32.95

Free delivery: Nov 12 – 13

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Part no. 6953424-3

BMW Z4 E85 E86 Positive Battery Cable Plus Pole Lead 6953424

€23.95

Free delivery: Nov 12 – 13

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Part no. 8W8959107B

Audi Q5 FY Rear Boot Trunk Lid Tailgate Control Unit Module ECU 8W8959107B

€32.95

Free delivery: Nov 12 – 13

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Part no. A2466200018

Mercedes-Benz A-Class W176 Battery Frame Holder Bracket Mount Plate A2466200018

€23.95

Free delivery: Nov 12 – 13

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Part no. A2059006923

Air Conditioning Module Mercedes C205 X253 A/C Control Unit ECU A2059006923

€23.95

Free delivery: Nov 12 – 13

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Part no. 4H0971104S

Audi A8 D4 Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 4H0971104S

€32.95

Free delivery: Nov 12 – 13

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Part no. 9261111

BMW 1 3 4 Series F20 F21 F30 F31 F32 Power Distribution Fuse Box Rear 9261111

€23.95

Free delivery: Nov 12 – 13

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Part no. 8636054

BMW F20 F30 LCI 120i 320i 330i B48 Engine Wiring Cable Loom Harness 8636054

€165.95

Free delivery: Nov 12 – 13

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Part no. A2055404982

Mercedes W205 Charging Plug Socket Wiring Cable A2055404982

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7PP907064GD

Porsche Cayenne 92A Body Comfort Module Control Unit 7PP907064GD

€113.95

Free delivery: Nov 12 – 13

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Part no. A2129000004

SAM Module Mercedes W212 Fuse Box Relay Control Unit A2129000004

€23.95

Free delivery: Nov 12 – 13

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Part no. 8S0907159

Audi TT FV Impact Body Sound Accoustic Control Module ECU 8S0907159

€23.95

Free delivery: Nov 12 – 13

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Part no. 8K0959793N

Audi Q5 8R Front Door Module Control Unit ECU Driver's Side 8K0959793N

€23.95

Free delivery: Nov 12 – 13

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Part no. 5B4E028

Remote Control Receiver BMW F70 X5 G05 G60 U06 Mini F65 Radio Module 5B4E028

€28.95

Free delivery: Nov 12 – 13

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Part no. A2129004502

Mercedes W204 W207 Front Right Door Control Unit Module A2129004502

€23.95

Free delivery: Nov 12 – 13

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Part no. A0015424423

Parktronic Screen Mercedes W207 W212 Front Parking Sensor Display A0015424423

€23.95

Free delivery: Nov 12 – 13

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Part no. 8X0959795A

Audi A1 8X Q3 8U Rear Door Module Control Unit ECU 8X0959795A

€23.95

Free delivery: Nov 12 – 13

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Part no. A2118701885-1

Mercedes SLK R171 Control Unit Module DC UHI MOST A2118701885

€23.95

Free delivery: Nov 12 – 13

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Part no. 8X0907357C

Audi TT 8J Headlight Head Light Lamp Range Control Unit Module ECU 8X0907357C

€23.95

Free delivery: Nov 12 – 13

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Part no. 7811700

BMW 1 3 Series E81 E87 LCI E90 E91 120d 320d N47 ECU KIT DDE CAS 3 Key 7811700

€113.95

Free delivery: Nov 12 – 13

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Part no. 2379303

Engine Wiring Mini One F57 Petrol B38 Loom Cable Harness Injector Module 2379303

€23.95

Free delivery: Nov 12 – 13

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Part no. 06E971627M

Fuel Injector Wiring Audi S4 B8 A6 A7 C7 4G 3.0 V6 TFSI Wiring Cable 06E971627M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048982614

Battery Cover Mercedes W204 W207 Trim Lid Panel A2048982614

€23.95

Free delivery: Nov 12 – 13

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Part no. A6519003403-3

Mercedes Sprinter W906 OM651.955 163HP Engine Unit Module ECU A6519003403 Manual

€227.95

Free delivery: Nov 12 – 13

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Part no. 4F0959792R

Audi A6 C6 Front Door Left N/S Module Unit Control ECU 4F0959792R

€23.95

Free delivery: Nov 12 – 13

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Part no. 04E903015

Volkswagen VW Golf Mk7 Audi A1 8X Alternator Generator 14V 110A 04E903015

€32.95

Free delivery: Nov 12 – 13

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Part no. 95861030800-1

Porsche Cayenne 92A Potential Distributor Cable Wiring Loom 95861030800

€161.95

Free delivery: Nov 12 – 13

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Part no. 8517862

BMW F10 F20 F30 F32 Engine Control Unit Diesel N47N ECU DDE 8517862 Manual

€28.95

Free delivery: Nov 12 – 13

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Part no. 7L0915138C

Audi Q7 4L Battery Mounting Bracket Part Holder 7L0915138C

€23.95

Free delivery: Nov 12 – 13

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Part no. A2229001015

Mercedes W213 C238 Ambient Lighting Control Unit Module ECU A2229001015

€28.95

Free delivery: Nov 12 – 13

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Part no. FUSE-SET-200

Automotive Electrical Fuse Set 200 Pieces Plug In Blade

€23.95

Free delivery: Nov 12 – 13

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Part no. 6Q0907440A

Volkswagen Transporter T5 Black Relay Control Unit 6 Pin 12V 361 6Q0907440A

€23.95

Free delivery: Nov 12 – 13

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Part no. 6868255

Air Module BMW F20 F21 F30 F31 F32 F36 ECU ICM Plus SRS Control Unit 6868255

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C11-12A650-AL-1

Ford Transit MK7 2.2 TDCI 86 HP Diesel Engine Control ECU 6C11-12A650-AL Manual

€42.95

Free delivery: Nov 12 – 13

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Part no. 8T0959793M

Audi A5 8T Front Door Control Module Left N/S Driver's Side Unit 8T0959793M

€23.95

Free delivery: Nov 12 – 13

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Part no. 9196100

Mini Cooper One F55 F56 F57 B Pillar Upper Column Airbag Sensor 9196100

€23.95

Free delivery: Nov 12 – 13

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Part no. 7795638

BMW 3 E90 E91 E92 E93 Cable starter-base B Diesel 7795638

€23.95

Free delivery: Nov 12 – 13

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Part no. A1665402350

Fuse Box Mercedes GLE W166 C292 W463 Relay Control Unit Module A1665402350

€32.95

Free delivery: Nov 12 – 13

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Part no. 415047

Mini Cooper One R55 R56 R57 Cable Adapter iPod Connection 0415047

€23.95

Free delivery: Nov 12 – 13

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Part no. 9289385

BMW F10 F34 GT Telematics Module Bluetooth Telematik Control Unit 9289385

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9354228

Mini Cooper F56 Rain Light Turn On Sensor Unit 9354228

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8387546

BMW 3 Z4 Series E46 E85 E86 Battery Positive Cable Fuse Box B Base 8387546

€23.95

Free delivery: Nov 12 – 13

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Part no. 6821203

Battery Cable BMW F45 F46 Negative Lead IBS Wiring Harness 6821203

€23.95

Free delivery: Nov 12 – 13

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Part no. 02M911024A

Volkswagen VW Golf VI Passat B6 Tiguan Starter Motor Diesel Engine 02M911024A

€28.95

Free delivery: Nov 12 – 13

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Part no. A2049060205-1

Mercedes C204 Rear SAM Module Fuse Box Relay Control Unit A2049060205

€37.95

Free delivery: Nov 12 – 13

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Part no. 038907281D

Genuine VW Audi Seat Skoda Diesel Glow Plug Relay Unit Black 9 Pins 038907281D

€23.95

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Part no. CM5T-14B321-CA

Ford Focus Mk3 Air Module Control Module Restraint CM5T-14B321-CA

€23.95

Free delivery: Nov 12 – 13

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Part no. 8509105

BMW E90 E91 E92 LCI N47N Cable Alternator Starter Base B+ 8509105

€28.95

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Part no. 1K0971228T

Volkswagen Scirocco Mk3 Battery Starter Motor Loom Lead 1K0971228T

€23.95

Free delivery: Nov 12 – 13

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