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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Ford Ranger Wildtrak Mk6 Sat Nav Radio Display Screen Unit KB3T-14G370-MGB

€213.95

Free delivery: Nov 12 – 13

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Part no. A4539063900

Smart C453 Alternator Generator 90A A4539063900 281920

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR028097

Range Rover Evoque L538 Tailgate Trunk Wiring Harness Cable BJ32-10E998-AA

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V5T-14A584-HEH

Ford Fiesta Mk7 Door Wiring Loom Harness Wire Rear Right O/S 8V5T-14A584-HEH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA962133E

Volkswagen Golf 5G Keyless Entry Module Aerial Antenna 5WA962133E

€32.95

Free delivery: Nov 12 – 13

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Part no. 5A821B4

BMW F74 Gran Coupé Rear Seat Wiring Loom Harness Wire Set 5A821B4

€32.95

Free delivery: Nov 12 – 13

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Part no. 6944109-1

BMW 5 Series E60 E63 Radio M-ASK M-Audio System Controller CD Player 6944109

€99.95

Free delivery: Nov 12 – 13

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Part no. A1729056500

Mercedes-Benz A B Class W176 W246 Aerial Antenna Cable A1729056500

€23.95

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Part no. 9878663

BMW F74 Gran Coupe E92 Bluetooth Telematics Module Control Unit 9878663

€94.95

Free delivery: Nov 12 – 13

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Part no. RHD-3C2971111R

Volkswagen Passat CC Servotronic Wiring Power Steering PAS Cable Wire 3C2971111R

€51.95

Free delivery: Nov 12 – 13

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Part no. 9313992

BMW F13 Front Seat Control Module Unit ECU Left Right N/O/S 9313992

€51.95

Free delivery: Nov 12 – 13

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Part no. NNN500560

Land Rover Discovery 3 L319 Engine ECU 276DT 190HP NNN500560 Automatic

€70.95

Free delivery: Nov 12 – 13

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Part no. 6884612

Mini Cooper F55 F56 F57 Parking Assistant Control Module 6884612

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6S61-12A650-XB

Ford Fiesta Mk6 ST150 N4JB 150HP Engine ECU Kit 6S61-12A650-XB BCM + 2 Keys

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779004215

Mercedes C118 W177 Radio Stereo Satellite Navigation Head Unit A1779004215

€336.95

Free delivery: Nov 12 – 13

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Part no. A0035421019

Relay Mercedes C117 GLA X156 ML W166 W176 W246 5 Pins Yellow A0035421019

€23.95

Free delivery: Nov 12 – 13

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Part no. CK52-14F641-AK

Range Rover Vogue L405 Evoque L538 TV Tuner Control Unit Module CK52-14F641-AK

€113.95

Free delivery: Nov 12 – 13

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Part no. A1648220230

Mercedes W164 W212 Alarm Sensor Warning Buzzer Module Unit A1648220230

€23.95

Free delivery: Nov 12 – 13

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Part no. J8A2-17509-AA

Range Rover Velar L560 Radio Supression Module Passive FIltering J8A2-17509-AA

€23.95

Free delivery: Nov 12 – 13

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Part no. 7645963

BMW X5 F15 Trim Cover Hosuing Tray High Voltage Battery 8682676

€75.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 8K5945095AC-1

Audi A4 B8 Rear Tail Light LED Wiring Harness Cable Plug Left N/S 8K5945095AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6398201689

Mercedes Vito W639 Sound Audio Amplifier Control Unit Module A6398201689

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005400664

Mercedes W205 Battery Cable Wiring Harness Loom Petrol Hybrid A0005400664

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8632687

BMW i3 I01 Engine Motor Sensors Module Wiring Cable Wire Harness 8632687

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0937555A

Audi Q7 4L Fuse Relay Box Housing Trim Panel Lid Cover 4L0937555A

€23.95

Free delivery: Nov 12 – 13

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BMW F01 Headlight Headlamp Control Module Unit 7381015

€270.95

Free delivery: Nov 12 – 13

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Part no. 5WA907727AB

VW Volkswagen Caddy SB Air Conditioning Climate Control Module ECU 5WA907727AB

€80.95

Free delivery: Nov 12 – 13

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Part no. 1T0907539C

Volkswagen Touran 1T Dashboard Solar Sun Sensor 1T0907539C

€23.95

Free delivery: Nov 12 – 13

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BMW i3 I01 Hybrid Electric Earth Ground Cable Line Strap Battery Lead 8602123

€23.95

Free delivery: Nov 12 – 13

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Part no. 8S0907468D

Audi TT FV Mk3 8S Gateway Module Interface Data Bus Control Unit 8S0907468D

€42.95

Free delivery: Nov 12 – 13

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Part no. A2229001206

Mercedes W205 C300h Drivetrain Control Module Hybrid A2229001206

€89.95

Free delivery: Nov 12 – 13

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Part no. JT7614B321AB

Ford Transit Courier Air Module Control Unit SRS ECU JT76-14B321-AB

€32.95

Free delivery: Nov 12 – 13

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Part no. A1725405004

Mercedes SLK R172 Wiring Harness Cable Adapter Connector A1725405004

€23.95

Free delivery: Nov 12 – 13

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Part no. 8368210

BMW E46 Antenna Amplifier TV Aerial Control Module Unit 8368210

€23.95

Free delivery: Nov 12 – 13

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Part no. 6945075

BMW 3 Series E91 E91N LCI Bracket Holder CD Changer Radio Player 6945075

€23.95

Free delivery: Nov 12 – 13

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Part no. 06H903018E

Porsche Macan 95B Alternator Generator 14V 180A 2.0 TFSI 06H903018E

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6925942

BMW E60 E61 Cable Loom Door Wiring Harness 6925942

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B971679A

Porsche Macan 95B Glove Box Storage Stowage Harness Loom Wire Cable 95B971679A

€56.95

Free delivery: Nov 12 – 13

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Part no. 8K0971029AQ

Audi A4 S4 B8 Door Wiring Harness Loom Cable Front Right O/S 8K0971029AQ

€56.95

Free delivery: Nov 12 – 13

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Part no. CPLA-19G442-AC

Range Rover L405 Wireless Headphones Transmitter Receiver Module CPLA-19G442-AC

€23.95

Free delivery: Nov 12 – 13

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Part no. A2711534691-5

Mercedes Cl203 Kompressor Engine Control ECU 1.8 Petrol 163HP Manual A2711534691

€165.95

Free delivery: Nov 12 – 13

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Part no. 95B971687F

Porsche Macan 95B Rear Door Wiring Loom Cable Harness Left N/S 95B971687F

€37.95

Free delivery: Nov 12 – 13

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Part no. A2188200187

Mercedes W221 Multimedia Interface USB Adapter Port Socket A2188200187

€28.95

Free delivery: Nov 12 – 13

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Part no. 8483811

BMW X3 G01 X4 G02 Alternator Positive Cable Wiring Loom Connector 8483811

€32.95

Free delivery: Nov 12 – 13

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Part no. A2129006423

Mercedes W212 C207 Head Unit Radio Stereo Sat Nav CD Player A2129006423

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CV2T-10C679-BF

Ford Fiesta Mk7 Negative Battery Cable Terminal 1.5 TDCi Diesel CV2T-10C679-BF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5QS919298

Audi A3 S3 8Y VW Caddy SB Mk4 Parking Sensor Module Control Unit 5QS919298

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2539006506

Mercedes Benz GLC W253 X253 Sat Nav CD Player Stereo Head Unit A2539006506

€469.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6929706

BMW F80 M3 LCI Negative Battery Cable Earth Minus Lead Wire Loom 9255047

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9387145

BMW F30 LCI 330e B48X Negative Earth Cable Battery 9387145

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2215402350-1

Mercedes W221 W216 Fuse Box Junction Control Unit Relay Module A2215402350

€28.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 7811176

Wiring BMW X3 F25 Automatic Gearbox Module Engine Wiring Harness 7811176

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9120812

BMW E60 E61 Door Wiring Harness Cable Loom Rear Right O/S 9120812

€42.95

Free delivery: Nov 12 – 13

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Part no. A2049057501

Mercedes W204 W212 Dashboard Light Sun Solar Sensor Unit A2049057501

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009827403

Mercedes W205 Energy Distributor Power Electrical Control Unit A0009827403

€23.95

Free delivery: Nov 12 – 13

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Part no. 5Q0971230HF

Volkswagen Passat B8 Alternator Wiring Loom Harness 2.0 TDI Diesel 5Q0971230HS

€28.95

Free delivery: Nov 12 – 13

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Part no. A0009828223

Mercedes W213 Power Relay 4 Pin 12V Hella A0009828223

€23.95

Free delivery: Nov 12 – 13

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Part no. A6401503434-1

Mercedes W169 A160 CDI OM640.942 82HP Engine ECU Kit A640150363 Automatic

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G9N-19G229-CE

Land Rover Freelander 2 L359 Alarm Siren Anti-Theft System 6G9N-19G229-CE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9140942-BAR

BMW 1 3 Series E87 E90 E91 LCI Rear PDC Ultrasonic Parking Sensor Barbera Red

€23.95

Free delivery: Nov 12 – 13

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Part no. 9270392-2

BMW F20 F21 F22 Central Information Display Dashboard Screen 6,5" 9270392

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059067200-1

Mercedes W205 S205 W213 Fuse Box Front Relay Control Unit Module A2059067200

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GK2T-19L540-BB

Ford Transit Custom Sliding Door Cable Harness 2.0 Diesel 77kW GK2T-19L540-BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K5945096AC-1

Audi A4 B8 Rear Tail Light LED Wiring Harness Cable Plug Right O/S 8K5945096AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6807322

Positive Cable BMW F90 M5 G30 Battery Wire Lead Underfloor Wiring 6807323

€51.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. A2119060700-1

Mercedes CLS W219 Head Unit CD Player Navigation Radio Audio Unit A2119060700

€379.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9115107

BMW X5 Series E70 E70N LCI Wiring Set Wash Water Container Cable Loom 9115107

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1ET-14F239-AA

Ford Focus Mk3 Multifunction Screen Radio Multimedia Display F1ET-14F239-AA

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04E907309AC-3

Audi A1 8X Engine ECU Kit Set 1.4 TFSI Petrol CZCA 125HP 04E907309AC Manual

€180.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. E1BT-14D212-MA

Ford Focus Mk3 Bluetooth Module Control Unit ECU E1BT-14D212-MA

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT10723AB

Ford B-Max Battery Tray Box Bracket Housing 1.0 EcBoost Petrol C1BT-10723-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1KM915333

Volkswagen New Beetle Jetta A6 Battery Tray Housing Bracket Mount 1KM915333

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B971411

Porsche Macan 95B Air Conditioning Adapter Wire Set Loom Harness 95B971411

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0962283

Skoda Superb Mk3 Estate 3V Keyless Entry Antenna Module 2.0 Diesel 5K0962283

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1131531091

Mercedes CLS500 C219 5.0 306HP M113.967 Engine ECU Kit A1131538679 Automatic

€313.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BH22-14633-DA

Land Rover Discovery 4 L319 Door Wire Wiring Harness Rear Left N/S BH22-14633-DA

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JB3T-19C107-CC

Ford Ranger Wildtrak Mk6 CD Player Stereo Radio Head Unit JB3T-19C107-CC

€289.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH22-14D618-AC

Range Rover Sport L320 Front Door Control Module Driver Side ECU AH22-14D618-AC

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L5971073M

Porsche Cayenne 9PA Front Bumper Wiring Loom Harness 7L5971073M

€23.95

Free delivery: Nov 12 – 13

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Part no. 8512043-8

BMW E91 LCI Engine Control Unit ECU N47N 2.0 Diesel 143HP Manual 8512043

€94.95

Free delivery: Nov 12 – 13

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Part no. 8K0971035A

Audi A4 B8 Front Driver Door Wiring Harness Loom Electrical Cable 8K0971035A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8715685

BMW F40 Mini F55 F56 Mid Range Sound Speaker Front Door Stereo 8715685

€23.95

Free delivery: Nov 12 – 13

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Part no. 1456751

Ford Transit Mk7 Glow Plug Ignition Wiring Loom 2.4 TDCI Diesel BK2Q-6M091-BA

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2150085

Ford Transit Custom Positive Battery Wiring Cable Harness Loom GK2T-14A099-BDB

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2649000700-6

Mercedes W177 A250 264960 264.960 224HP Engine ECU Module A2649000700 Automatic

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1175401605

Mercedes C117 Door Wiring Harness Control Module Front Left N/S A1175401605

€37.95

Free delivery: Nov 12 – 13

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Part no. A2044401705

Mercedes S204 Door Wiring Loom Cable Rear Left Right N/O/S A2044401705

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2749062100

Starter Motor Mercedes W213 C238 C253 Engine A2749062100

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5QF971227D

Audi RSQ3 F3 Battery Cable Plus Pole Positive Wiring Harness Loom 5QF971227D

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1504506

Ford Transit Connect Body Control Module BCM Control Unit ECU 7T1T-14A073-BB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8630125-5

BMW F21 Engine Control ECU Manual 1.6 Petrol 170 HP 118i N13 N13B16A 8630125

€427.95

Free delivery: Nov 12 – 13

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Part no. GV6T-14A073-DJ

Ford Focus Mk3 Transit Connect Mk2 Body Control Module BCM GV6T-14A073-DJ

€99.95

Free delivery: Nov 12 – 13

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Part no. 1Q0971120AP

VW Eos 1F Front Door Wiring Loom Harness Cable Drivers Side O/S 1Q0971120AP

€42.95

Free delivery: Nov 12 – 13

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Part no. 3Q0959435G

VW Volkswagen Tiguan 5N Entry Keyless Kessy Control Module Unit ECU 3Q0959435G

€23.95

Free delivery: Nov 12 – 13

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Part no. 918545-102

BMW F11 Wiring Cable Loom 918545-102 767832-113

€23.95

Free delivery: Nov 12 – 13

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Part no. A6519007401-2

Mercedes W204 C250CDI Blue Efficiency OM651.911 204HP Engine ECU A6519007401 Key

€189.95

Free delivery: Nov 12 – 13

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Part no. A2711534591

Mercedes W203 C180 Kompressor M271 Engine Module ECU A2711534591 Automatic

€47.95

Free delivery: Nov 12 – 13

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Part no. A2188701489

Mercedes W218 Audio Amplifier Harman Kardon Subwoofer Control Unit A2188701489

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GK2T-14401-FJB

Ford Tourneo Custom Fuse Box Fusebox Relay Box 2.0L Diesel YMFS GK2T-14401-FJB

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

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