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 7 Series E65 E66 E67 Battery Cable Wire Earth Ground Minus Negative L=260MM

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 0-390-201-999

BMW 5 Series E60 E61 Front Seat Backrest Adjustment Bosh 0 390 201 999

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7938196

PDC Module BMW F45 X3 F25 Mini F55 F56 Parking Distance Sensor Unit 7938196

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7615305

Engine Wiring BMW F20 F21 F30 F31 N13 Loom Module Harness Cable 7615305

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9197161

BMW 1 Series E82 ECU Footwell Light Module Control Unit PL2 FRMFA 9197161

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1638201675

Mercedes-Benz M-Class ML W163 Roof Antenna A1638201675

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8512047

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

€151.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055404106

Brake Harness Mercedes W205 Rear Left Brake Pad Wear Wire Wiring A2055404106

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6953424-2

BMW Z4 Series 2 E85 E86 Positive Battery Cable Plus Pole Lead 6953424

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9390396

Audio Amplifier BMW F20 F21 F22 Harman Kardon Active Sound Design Unit 9390396

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9183233

BMW E60 E61 LCI Centre Console Switch Cluster Control Unit ECU Module 9183233

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2711501920

Engine Wiring Mercedes W204 C207 W212 M271 Harness Loom Cable A2711501920

€132.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 55585024

Vauxhall Opel Insignia A 2.0 TDCI Engine Control Module 55585024 Manual

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9194064

Board Monitor BMW X5 X6 E70 E71 Sat Nav System Screen 8,8" 9194064

€108.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9296780

BMW F20 F21 F30 F31 Control Unit Air Conditioning Module 9296780

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR007521

Land Rover Discovery 4 L319 Glow Plug Wire Wiring Cable Left N/S 4R8Q-12A378-AF

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0971228N

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2025402373

Mercedes W169 W203 W204 W211 OBD Diagnostic Plug Cover A2025402373

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A9067601204

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AV6N-11000-GE

Ford Focus Mk3 Transit Connect Starter Motor Diesel Engine AV6N-11000-GE

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1698206726

Mercedes-Benz W245 ECU Control Unit Sensor Module Airbag A1698206726

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 09K927750K

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR007522

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9302937

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009006612

Rear Module Mercedes C205 W205 Fuel Pump Control Unit A0009006612

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2025405981-1

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7N0951171A

Volkswagen Caddy 2K Anti Theft Interior Roof Alarm Sensor 7N0951171A

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0937124P

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8387540

BMW X3 E83 Positive B Battery Terminal Point Case 8387540

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7852144

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

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9227766

BMW F11 Touring Tailgate Spoiler Probe AM/FM Sensor 9227766

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G0909144Q

Audi A6 C7 Allroad Electric Power Steering Rack Motor Module Unit 4G0909144Q

€469.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9330952

BMW F12 F13 Air Control Module Control Unit ACSM4 9330952

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8570845

Mini Cooper F55 F56 F57 F60 Starter Motor Engine 8570845

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2447799

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

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7793200

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A9065400341

Battery Cable Mercedes Sprinter W906 Negative Lead Wiring Harness A9065400341

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0959792G

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9374508

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8635813

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6970337

BMW E92 Seat Backrest Adjustment Adapter Lead Cable 6970337

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6941445

BMW E63 E64 Bluetooth Cable Hands Free Telephone Microphone Unit 6941445

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1525794

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 31268907

Land Rover 4 L319 Heated Seat Controle Module Front Left N/S 6G9N-14C724-BD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8G91-12A650-HC

Ford Galaxy Mk2 Engine Control Unit ECU 140HP 8G91-12A650-HC Automatic Gearbox

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9805670

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

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3452226

BMW X3 Series E83 LCI Wiring Harness Engine Gearbox Module 3452226

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8385159

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7607705

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

€90.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5M0907357G

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

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6820464

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

€99.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1775401629

Mercedes W177 Rear Bumper PDC Wiring Loom Parking Sensor A1775401629

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0971687AQ

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

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7120204

BMW E93 Cable Wiring Loom Harness Hydraulic Pump 7120204 7191362

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6953424-3

BMW Z4 E85 E86 Positive Battery Cable Plus Pole Lead 6953424

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C0937049AJ

Volkswagen Eos 1F Module BCM Body Control Unit Module ECU 3C0937049AJ

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7N0035454A

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2466200018

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059006923

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0971104S

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

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9261111

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8636054

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

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2129000004

SAM Module Mercedes W212 Fuse Box Relay Control Unit A2129000004

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0959793N

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2129004502

Mercedes W204 W207 Front Right Door Control Unit Module A2129004502

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0015424423

Parktronic Screen Mercedes W207 W212 Front Parking Sensor Display A0015424423

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8X0907357C

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059006337

Safety Module Mercedes S205 Airbag Belt Tensioner Control Module SRS A2059006337

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

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: Aug 10 – 11

If paid before 14:00

Part no. 2379303

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06E971627M

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009007009

Mercedes Vito W447 Diesel Adblue Module Control Unit ECU A0009007009

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6860936

BMW i3 I01 F45 F46 Control Unit SAS Module ECU 6860936

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2048982614

Battery Cover Mercedes W204 W207 Trim Lid Panel A2048982614

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6519003403-3

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

€227.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7552105

Mini Cooper One R55 R56 R58 Petrol Engine Starter Motor N12 7540897

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6Q0907440A

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0959793M

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9196100

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7795638

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1665402350

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

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 415047

Mini Cooper One R55 R56 R57 Cable Adapter iPod Connection 0415047

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9354228

Mini Cooper F56 Rain Light Turn On Sensor Unit 9354228

€32.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 2650917-1

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

€132.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2049060205-1

Mercedes C204 Rear SAM Module Fuse Box Relay Control Unit A2049060205

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 038907281D

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2129007104

Mercedes W212 SAM Module Control Unit Electrical Fuse Box Unit A2129007104

€170.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8509105

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0971228T

Volkswagen Scirocco Mk3 Battery Starter Motor Loom Lead 1K0971228T

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9311849

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059007037

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

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2139068701

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

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q4959392E

Skoda Octavia 5E Front Door Module Control Unit ECU Passenger Side 5Q4959392E

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0959592D

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F0910655Q

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9131780

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0907115A

Audi A5 8T 1.8 TFSI CABD 170HP Engine Control Unit ECU 8T0907115A Manual Gearbox

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A9079002407

Mercedes W907 Electronic Ignition Module Control Unit A9079002407

€161.95

Free delivery: Aug 10 – 11

If paid before 14:00

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