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

€23.95

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

€23.95

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Rear Module Mercedes C205 W205 Fuel Pump Control Unit A0009006612

€23.95

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Part no. A2025405981-1

Mercedes W164 W204 C207 W212 W221 W906 Wiring Cable Plug OBD Socket A2025405981

€23.95

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

€23.95

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BMW X3 E83 Positive B Battery Terminal Point Case 8387540

€23.95

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Ford B-Max Front Door Module Control Unit Driver's Side CV1T-14B531-AC

€28.95

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

€66.95

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BMW F11 Touring Tailgate Spoiler Probe AM/FM Sensor 9227766

€23.95

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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. 7595179-15

BMW E81 E87 LCI N43 116i 1.6 122HP ECU Control Unit Kit DME 7595179 CAS3 + Key

€194.95

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Part no. 8E0971687L

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

€28.95

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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

€113.95

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Part no. JPLA-15K603-AB

Land Rover Sport L494 Remote Keyless Entry Antenna Module JPLA-15K603-AB

€23.95

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Part no. 7793200

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

€23.95

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Part no. A9065400341

Battery Cable Mercedes Sprinter W906 Negative Lead Wiring Harness A9065400341

€23.95

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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. 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. 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

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Part no. 9197177

BMW E82 Footwell Light Module Control Unit ECU NSW PL2 FRM II 9197177

€113.95

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

€56.95

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BMW X3 Series E83 LCI Wiring Harness Engine Gearbox Module 3452226

€32.95

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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

€90.95

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Part no. 5M0907357G

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

€23.95

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

€42.95

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Part no. 6820464

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

€23.95

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Part no. A1775401629

Mercedes W177 Rear Bumper PDC Wiring Loom Parking Sensor A1775401629

€37.95

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Part no. 8W0971687AQ

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

€32.95

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Part no. 7120204

BMW E93 Cable Wiring Loom Harness Hydraulic Pump 7120204 7191362

€32.95

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Part no. 6953424-3

BMW Z4 E85 E86 Positive Battery Cable Plus Pole Lead 6953424

€23.95

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Part no. 7N0035454A

VW Volkswagen Sharan Front Door Left Right N/O/S Speaker Loudspeaker 7N0035454A

€23.95

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

€23.95

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Part no. A2059006923

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

€23.95

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Part no. 4H0971104S

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

€32.95

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

€23.95

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

€165.95

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Porsche Cayenne 92A Body Comfort Module Control Unit 7PP907064GD

€113.95

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Part no. A2129000004

SAM Module Mercedes W212 Fuse Box Relay Control Unit A2129000004

€23.95

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Part no. 8K0959793N

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

€23.95

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Part no. A2129004502

Mercedes W204 W207 Front Right Door Control Unit Module A2129004502

€23.95

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Part no. A0015424423

Parktronic Screen Mercedes W207 W212 Front Parking Sensor Display A0015424423

€23.95

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Part no. A2118701885-1

Mercedes SLK R171 Control Unit Module DC UHI MOST A2118701885

€23.95

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Part no. 8X0907357C

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

€23.95

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Part no. A2059006337

Mercedes S205 Air Module Control Unit SRS A2059006337

€66.95

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Part no. 9268478

BMW F20 F21 F30 F31 Driver Assist ACC Lane Change Switch Button Panel 9268478

€42.95

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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

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Part no. 2379303

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

€28.95

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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

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Part no. A0009007009

Mercedes Vito W447 Diesel Adblue Module Control Unit ECU A0009007009

€66.95

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Part no. 6860936

BMW i3 I01 F45 F46 Control Unit SAS Module ECU 6860936

€142.95

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Part no. A2048982614

Battery Cover Mercedes W204 W207 Trim Lid Panel A2048982614

€23.95

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Part no. A6519003403-3

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

€227.95

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Part no. 4F0959792R

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

€23.95

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Part no. 03G906018DT-1

Seat Leon II 1P 2.0 TDI BMN 170HP Engine Control Module ECU 03G906018DN Manual

€94.95

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Part no. A2055403406

Mercedes W205 Brake Indicator Wiring Harness Cable Front Right O/S A2055403406

€23.95

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Part no. 8517862

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

€28.95

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Part no. A2229001015

Mercedes W213 C238 Ambient Lighting Control Unit Module ECU A2229001015

€28.95

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Part no. FUSE-SET-200

Automotive Electrical Fuse Set 200 Pieces Plug In Blade

€23.95

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Part no. 6Q0907440A

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

€23.95

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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

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Part no. 9196100

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

€23.95

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Part no. 7795638

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

€23.95

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Part no. A1665402350

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

€32.95

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Mini Cooper One R55 R56 R57 Cable Adapter iPod Connection 0415047

€23.95

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Mini Cooper F56 Rain Light Turn On Sensor Unit 9354228

€32.95

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

€23.95

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Battery Cable BMW F45 F46 Negative Lead IBS Wiring Harness 6821203

€23.95

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Part no. 2650917-1

Ford Transit Custom MK8 Engine Alternator Generator Unit Diesel KK3T-10300-BB

€132.95

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Part no. A2049060205-1

Mercedes C204 Rear SAM Module Fuse Box Relay Control Unit A2049060205

€37.95

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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

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Part no. A2129007104

Mercedes W212 SAM Module Control Unit Electrical Fuse Box Unit A2129007104

€170.95

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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

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Part no. 9311849

BMW F20 F21 Air Conditioning A/C Climate Control Unit Module ECU 9311849

€23.95

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Part no. A2059007037

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Fuse Unit A2059007037

€66.95

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Part no. A2139068701

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Fuse Unit A2139068701

€23.95

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Part no. 8626472-1

BMW F20 F21 M135i N55 326HP Petrol Engine Control Unit ECU DME 8626472 Automatic

€284.95

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Door Module Audi A3 8V VW Golf 7 Seat Leon 3 Front Right O/S 5Q0959592D

€23.95

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Audi A6 C6 4F Control Unit Air Module ECU Bosch 4F0959655G

€23.95

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BMW 3 Series E92 ECU Body Control Module Junction Box L1 PL2 JBBFE 9131780

€28.95

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Mercedes W907 Electronic Ignition Module Control Unit A9079002407

€161.95

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€23.95

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BMW 7 Series E65 E66 Fuse Board Power Distribution Box

€23.95

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BMW 3 X3 Series E46 E83 Engine Electronics Complete Control Unit Box 7534921

€23.95

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BMW F10 F11 Power Distribution Fuse Box Front 9210861 61149210861

€23.95

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BMW i3 I01 F10 F20 F30 LCI KaFAS Camera Speed Control ECU Module Unit 9359799

€23.95

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Mini Cooper R50 R52 R53 Support Bracket Navigation Computer 6916058

€23.95

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Mini F56 Interior Electrical Cable Excitement Package Wiring Harness 6809545

€32.95

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Crash Sensor Mercedes W176 W204 W212 Impact Air Unit Module Control A0055421218

€23.95

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Audi A4 B7 Harman Becker Bluetooth Module Interface Control Unit 8P0862335Q

€23.95

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Audi A5 8T Diagnostic Interface Gateway Control Module Unit ECU 8R0907468F

€23.95

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Part no. 5M5T14B192EA

Ford Transit Custom Relay 4-Pin Black 12V 40A FOMOCO 5M5T14B192EA

€23.95

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Mercedes W907 Battery Electrical Ground Line Wire Earth Cable A9075406749

€23.95

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