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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Mercedes W177 Engine Wiring Loom Harness Cables M260 Petrol A2601501600

€189.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7PP907279T

Porsche Cayenne Turbo 92a Comfort Convenience Body Control Unit ECU 7PP907279T

€370.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 0-1432785-1

TycoElectronics 12 V DC Fuse Relay Set 0-1432785-1

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9297604

BMW F12 Wire Harness Cable Loom Wiring 9297604 9313752

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1661500333

Mercedes A-Class W168 Cable Starter Line Negative Line Battery A1661500333

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DT1T-14B321-AG

Ford Transit Connect Mk2 Air Module Control Module ECU 1.5 TDCi DT1T-14B321-AG

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2139008730

Mercedes C253 W177 W205 W247 Gearbox Module Control ECU Automatic A2139008730

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3AA971694CB

Volkswagen Passat B7 Door Wiring Loom Harness Rear Right O/S 3AA971694CB

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7N0907530BE-1

Volkswagen Caddy 2k Tiguan 5N Gateway Control Module ECU Diagnosis 7N0907530BE

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9270356-1

BMW F40 Mini F55 F56 Fuse Box Power Distribution Junction Relay Unit 9270356

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 83A947356T

Audi Q3 RSQ3 F3 Door Lighting LED Module Harness Wire Front Left N/S 83A947356T

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2075400740

Fuse Box Mercedes W204 Battery Terminal Control Unit Module A2075400740

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2049006007

Mercedes W204 Multimedia Audio CD Player Radio Head Unit A2049006007

€165.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1T1937503A

Volkswagen Touran 1T Fuse Box Relay Control Unit Bracket Module 1T1937503A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. UN09675D2

Ford Ranger Mk4 Keyless Entry ECU Control Module Visteon 41770 UN09675D2

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A23697

Mini F66 F65 F67 Outside Mirror Light Module Unit Left N/S 5A23697

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1648700951

Mercedes GL Instrument Panel Switch Panel Seats PDC Suspension A1648700951

€108.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AH42-14B539-AA

Land Rover Range Rover L322 Fuse Box Housing Cover Tray Holder AH42-14B539-AA

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9239781

BMW F10 Front Bumper Parking Sensor PDC Wiring Harness Loom Wire 9239781

€75.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. BK2T-19L540-BE

Ford Transit Custom Mk8 Door Wiring Loom Harness Right O/S BK2T-19L540-BE

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2045400150

Mercedes-Benz C E Class W204 W207 Fuse Distribution Box Interior A2045400150

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. JK2T-14C676-AA

Ford Ranger Mk3 Door Air Module Impact Sensor Unit Driver's Side JK2T-14C676-AA

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1775407932

Mercedes W177 W247 Positive Battery Cable Lead Wire Starter A1775407932

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9383176

BMW F20 F30 F34 BCM FEM BSI Body Control Module Unit 9383176

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2129009908

Mercedes SLK R172 Fuse Box Relay Control Unit SAM Module A2129009908

€127.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8K0971688AC

Audi A4 B8 Door Wiring Harness Cable Loom Rear Right O/S 8K0971688AC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. XH42-10E921-AC

Land Rover Range Rover L322 Aerial Antenna Amplifier Module Ecu XH42-10E921-AC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8J0971085B

Audi TT 8J Rear Bumper Fog Light Wiring Loom Harness Cabling 8J0971085B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9199996

Holder BMW F13 TV Video Switch Control Module Unit Bracket Mount 9199996

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1Z0959772B

VW Eos 1F Golf 1K Jetta 1K Passat 3C Heated Seat Control Unit Module 1Z0959772B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W0971228BH

Audi A4 B9 A5 F5 Starter Motor Battery Cable Wiring Harness 8W0971228BH

€203.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7011612

BMW 7 Series E65 E66 E67 Centre Console Coinbox With Vent Storage Compartment

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W0915459J

Audi A5 F5 S5 RS5 A4 B9 Battery Central Protection Cover Mount 8W0915459J

€80.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2S6H-18C426-DA

Ford Fiesta St Mk5 Heater Control Temperature Harness Wire Cable 2S6H-18C426-DA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1S0919275D-MRE

Audi A5 8T PDC Parking Distance Control Sensor 1S0919275D Misano Red Pearl - Z3M

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3R0907274

Seat Exeo TPMS Tyre Pressure Monitor Module Control Unit ECU 3R0907274

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. N9D3-14D617-AA

Range Rover Velar L560 Passenger Door Control Unit Module ECU N9D3-14D617-AA

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. LR140109

Range Rover Evoque L551 Starter Motor 2.0 Diesel Hybrid MHEV M8D2-11001-AC

€194.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8614090

BMW X5 F15 High Voltage Battery Unit Seal Gasket Surround Rubber 8614090

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1Q0945093C-1

VW Volkswagen Eos 1F Rear Tail Light Lamp Wiring Cable Inner Left N/S 1Q0945093C

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1665402950

Mercedes W166 Prefuse Box F32/4 Power Distribution Box A1665402950

€132.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7428361

BMW G11 G20 G21 G30 G31 Charge State Display Indicator Unit LED 7428361

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A52C39

BMW X1 X2 Rear Door Wiring Loom Harness Cable Left Right N/O/S 5A52C39

€99.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9241825

Central Information Display BMW F10 F11 LCI Boardmonitor Screen 7" 9241825

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0951253-1

VW Volkswagen Audi Seat Relay 449 12V 30A Unit Module 4 Pins 1K0951253

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6C0971537A

Audi S1 8X VW Polo GTI 6R 6C Battery Terminal Earth Cable Wire 6C0971537A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2129001829

Mercedes C207 W212 Front Right Door O/S Control Unit Module A2129001829

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2059000219

Mercedes C117 W176 W205 Telematics Module Communication Control Unit A2059000219

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0535450226

Mercedes Sprinter W906 Fuse Box Connector Plug Socket A0535450226

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2601091

Ford Kuga Mk3 Air Module Control Unit ECU LV4T-14B321-SC

€165.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T0971035G

Audi A5 8T Coupe Front Door Wiring Loom Harness Driver's Side Cable 8T0971035G

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6826201

Junction Point BMW X5 F15 X6 F16 B + Battery Power Distributor 6826201

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2215402462

Mercedes W221 SAM Fuse Box Comfort Control Module Unit ECU A2215402462

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2118705094

Mercedes C219 Sat Nav Head Unit Multimedia Screen DVD Rom A2118705094

€246.95

Free delivery: Sep 11 – 15

If paid before 14:00

Part no. 3H42-19G255-AB

Range Rover L322 Radio Aerial Antenna Amplifier Module Ecu 3H42-19G255-AB

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W8971687M

Audi A5 F5 Sportback Door Wiring Harness Loom Rear Left N/S 8W8971687M

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 02Z911024Q

Audi A3 8V 2.0 TDI Quattro Starter Motor Engine Diesel Bosch 02Z911024Q

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9140179

BMW F10 Radio Antenna Amplifier Suppression Filter 9140179

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W6945091AA-2

Audi A5 F5 Rear Tail Light Matrix LED Outer Left N/S Wire Harness 8W6945091AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8R0907401J

Audi A5 8T Q5 8R 3.0 TDI CCWA 240HP Quattro Engine ECU 8R0907401J Automatic

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1765404609

Mercedes W176 Rear Bumper PDC Wiring Loom Parking Sensor Cable Harness 9364201

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7PP907530J

Porsche Cayenne 92A Gateway Control Module 4.8 V8 4852 Petrol 7PP907530J

€75.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2469006918

Mercedes C117 X156 All Wheel Drive Control Unit Module ECU MFA A2469006918

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7377846-1

BMW F32 F33 F36 F80 M3 Front Headlight Headlamp Light Wiring Right O/S 7377846

€23.95

Free delivery: Sep 11 – 15

If paid before 14:00

Part no. 8MD2-14N164-AB

Range Rover Evoque L551 Fuse Box Module Wiring Loom Harness 8MD2-14N164-AB

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8573260-8

BMW F20 F21 116d ed Diesel N47N 116HP ECU Kit DDE 8573260 + Key + FEM Manual

€417.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8704698

BMW G20 G21 Positive Battery Cable High Voltage Hybrid 8704698

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7164820-2

BMW E88 E93 Convertible Rollover Bar Protection System Sensor Unit Module 800137

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6842255

BMW F39 F45 Mini F56 F60 ICM Control Unit Air Module ECU 6842255

€151.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 00046859297

Citroën Relay Peugeot Boxer Fiat Ducato Air Module Control Unit ECU 00046859297

€279.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8K0907472

Audi A4 B8 Headlight Headlamp LED Module Control Unit 8K0907472

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2044406035

Mercedes W204 Front Door Wiring Harness Cable Passenger Side A2044406035

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. C1BT-14B321-FE

Ford Fiesta Mk7 3Dr Air Module ECU Control Unit C1BT-14B321-FE

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6982363

BMW E60 E61 Rear Door Cable Wiring Loom Harness Left Right N/O/S 6982363

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 0141339

Mini R50 R53 Basic Body Control Module Unit ECU Controller 0141339

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. LU5T-15K866-CJ

Ford Kuga Mk3 Transit Connect Mk2 Parking Aid Control Module LU5T-15K866-CJ

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A0BD89

BMW F40 Power Distribution Fuse Box LIN Control Unit Module 5A0BD89

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6957347

BMW 6 Series E63 E64 F06 F12 F13 Aerial Antenna Amplifier Module Left N/S

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AH4N-15607-AE

Land Range Rover L405 Discovery L319 Keyless Entry Module Unit AH4N-15607-AE

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9131629

BMW X1 E84 Rear Tailgate Boot Lid Wiring Loom Harness Cable 9131629

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03L906018KP

Audi TT 8J CFGB 2.0 TDI Quattro 170HP Engine ECU Kit 03L906018KP Automatic

€146.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. BJ32-14D618-AD

Land Rover Discovery 4 L319 Door Control Module Driver's Side BJ32-14D618-AD

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7N0971228G

Volkswagen Sharan 7N Positive Plus + Battery Cable Wiring Harness 7N0971228G

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8635627

Mini F56 Engine Control Unit ECU 192HP Petrol 8635627 Manual Gearbox

€256.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9343687

BMW F01 LCI F07 F10 F11 F25 Safety Control Unit Air Module Bag ECU 9343687

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009062822-2

Alternator Generator Mercedes W207 W212 W906 Engine Diesel 12V 250A AAL1954

€161.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6927706

BMW 5 6 Series E60 E63 E64 Tubing Duct Battery Cable Lead Positive Underfloor

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. L8B2-70718-AAA

Range Rover Evoque L551 Telematics Bluetooth Control Unit L8B2-70718-AAA

€99.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. XVJ500046

Range Rover Velar L560 Range Rover Sport L320 Bluetooth Control Module XVJ500046

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6396641914

Mount Support Mercedes Vito W639 Battery Bracket Holder Mounting A6396641914

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6915943

BMW 7 X3 Z4 Series E65 E66 E83 E85 E86 Interface Japan Luggage Module 6915943

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. BK2T-14A175-BA

Ford Transit Custom Fuse Box Power Distribution Cover Trim Panel BK2T-14A175-BA

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0018279904

Mercedes W204 A207 S212 S212 UCI-IPOD Video Connecting Cable Harness A0018279904

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9865634

Mini Cooper F55 Front Door Wiring Loom Harness Cable Driver's Side O/S 9865634

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DV61-12A650-CEA-1

Ford Transit Connect Engine Control ECU 1.6 Diesel 115HP DV61-12A650-CEA Manual

€427.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9233592

BMW F10 F11 Sound Amplifier Module Unit Harman/Becker 9233592

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0035420019

Mercedes W204 Battery Relay Fuse Control Unit Module A0035420019

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4H0907247

Audi A6 4G Keyless Entry Aerial Antenna Control Unit Module 4H0907247

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AW93-14F641-AD

Land Rover Range Rover Evoque L538 TV Tuner Control Module ECU AW93-14F641-AD

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

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