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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Audi A4 S4 RS4 8H Cabriolet Door Wiring Loom Harness Passenger Side 8H1971035CT

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 99757241902

Porsche Boxster Cayman 987 Underbody Cover Panel Trim 99757241902

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9356156

External Ignition Base BMW F20 F30 F32 F33 Power Terminal Distribution 9356156

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9343287

BMW i3 I01 Mini F56 Air Conditioning System A/C Control Unit Module 9343287

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6G9T-14324-BJ

Ford Mondeo Mk4 Negative Earth Cable Battery Lead Wire 6G9T-14324-BJ

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2218210006

Door Cable Mercedes W221 W216 Front Wiring Loom Seat Control Switch A2218210006

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8353447

BMW E36 E38 Relay Two Pole Make Contact 8353447

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L0971235

Volkswagen Touareg 7L Negative Battery Terminal Cable Wiring Loom 7L0971235

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6T1T-13350-AA

Ford Transit Connect Mk1 Turn Signal 5-Pin Relay Black 12V 6T1T-13350-AA

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9807168

Air Module Sensor Mini R57 Cabrio Convertible Crash Control Unit ECU 9807168

€108.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2098208089

Mercedes A209 C209 Radio GPS Telephone CD Player Head Unit Control A2098208089

€493.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 919504H071

Hyundai H-1 Fuse Box Module Control Unit ECU 919504H071

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0025428719-1

Mercedes W176 W204 W207 W166 Relay 4 Pin Grey Hella SET X2 A0025428719

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0951253A

VW Audi Seat Skoda Glow Plug Relay Unit Engine Supply Black 4 Pins 1K0951253A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4519012101

Smart Fortwo 451 Air Module Control Unit SRS A4519012101

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0907159D

Audi RS4 B9 A5 F5 Impact Sound Module Control Unit 8W0907159D

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5H0971104P

Volkswagen Golf Mk8 CD1 Parking Sensor Wiring Rear Bumper Loom Cable 5H0971104P

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2479052503

Mercedes Sprinter W910 Remote Key Control Unit A2479052503

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4475406353

Mercedes Vito W447 Battery Cable Diesel OM651 Alternator Wiring A4475406353

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L906018GF

VW Scirocco Mk3 2.0 TDI 140HP CFHC Engine Control ECU Kit 03L906018GF Manual

€227.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CV1T-14B533-AE

Ford B-Max Mk1 Front Door Module Control Unit Passenger Side CV1T-14B533-AE

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CPLA-14D620-AC

Range Rover L405 Rear Door Control Unit Module CPLA-14D620-AC

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6519002803-3

Mercedes Vito W447 114 CDI OM651.950 Engine ECU Kit Ignition + 2 Key A6519002803

€474.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5N0035342B-1

VW Volkswagen Touran Golf Polo Interface Module Multimedia Control 5N0035342B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V4971035J

Audi S3 8V Door Trim Wiring Wire Harness Cable Front Driver's Side 8V4971035J

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L906018MQ

Audi Q5 8R CGLB 2.0 TDI 170HP Quattro Engine Control ECU 03L906018MQ Automatic

€146.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0971035BB

Audi A5 8T Front Driver Side Door Wiring Harness Cable 8K0971035BB

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5N2941005C-2

Volkswagen Tiguan 5N Headlight Wiring Cable Adapter Front Left N/S 5N2941005C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7789755

BMW 5 6 Series E60 E61 E63 E64 LCI Cable Starter-Base B 7789755

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR080292

Range Rover Sport L494 Engine Starter Motor 3.0 Diesel FPLA-11001-BB

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AG91-12A650-ADF

Ford Mondeo Mk4 Engine Control ECU 2.0 TDI 163 HP KIT AG91-12A650-ADF Manual

€284.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 82G971035B

Audi A1 GB Mk2 Door Wiring Loom Harness Cable Front Driver Side O/S 82G971035B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6933264

BMW E65 E66 Control Unit Door Rear Passenger Side 6933264

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F1971687AL

Audi A6 C6 Rear Left N/S Door Harness Cable Loom 4F1971687AL

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0907217D

Audi A4 B9 Front Windscreen Windshield Lane Assist Camera 8W0907217B

€227.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9123994

BMW Z4 Series E89 Cabrio Roadster Radio Antenna Mast Aerial FM Bumper 9123994

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0862335B

Audi A4 B8 Bluetooth Multimedia Interface Control Module Unit ECU 8T0862335B

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8594489

BMW X1 F48 Mini F55 F56 F57 Battery Cable Starter-Base B+ 8594489

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2535400701

Mercedes A238 M276 Engine Alternator Wiring Loom Harness A2535400701

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8X0971845C

Audi A1 8X Fuse Box Relay Control Unit Module Bracket Holder 8X0971845C

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DV6T14B531BD

Ford Transit Connect Door Module Front Right O/S Control Unit ECU DV6T14B531BD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. TM450

Trafficmaster TM450 GPS Vehicle Location Tracker Control Unit Module ECU

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055407616

Wiring Mercedes W205 Electrical Cable Transmission To Body A2055407616

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0971036A

Audi A5 8T Front Door Wiring Harness Cable Left N/S Passenger Side 8T0971036A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9897879-4

Mini Cooper F55 F56 F60 B38C 1.5 136HP Engine Module ECU DME 9897879 Manual

€118.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3415607

BMW X3 E83 LCI Petrol N52N Cable Alternator Starter Base B+ 3415607

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. YTA101910

Land Rover Freelander L314 Positive Plus Pole Battery Cable Lead Loom YTA101910

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6937083

Ultra Sonic Module Mini Cooper R50 R53 Alarm System Sensor 6937083

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2518200979

Mercedes W251 Sat Nav Comand Radio Player Unit Stereo Head Unit A2518200979

€184.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7541779

BMW Z4 E85 2.0i N46 Cable Alternator Starter Base B+ 7541779

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7928582

BMW G01 G02 G05 G20 G21 G22 G30 G31 G32 DAB Audio Sound Amplifier Module 7928582

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DT1T-18D815-KB

Ford Transit Connect Mk2 Radio Stereo Head Unit Control Panel DT1T-18D815-KB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8506444

BMW E90 E91 LCI E92 330d N57 245HP ECU Engine Control Unit DDE 8506444 Manual

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7379674-2

BMW F01 F02 LCI Front Headlight Wiring Harness Cable Plug Right O/S 7379674

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0005440456

Mercedes W163 Green Relay 2-Pin ML350 112970 3.7 Petrol 245HP A0005440456

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8E0907559H-1

Audi A4 B7 3.2 FSI Quattro AUK 255HP Engine ECU Kit 8E0907559H Manual

€474.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0971349C

Audi TT 8J Mk2 Alternator Wiring Loom Harness Cable 2.0 TFSI Petrol 1K0971349C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2098206126

Mercedes W209 Convertible Rain Light Sensor Windscreen Module A2098206126

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7567321-1

BMW 1 3 Series E81 E87 LCI E90 116i 316i N45N ECU Kit DME 7567321 + CAS3 + Key

€408.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. MB3T-14A411-SRC

VW Volkswagen Amarok NF Ford Ranger Cab Wiring Harness Loom MB3T14A411SRC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9339825

BMW G11 G30 G31 Power Supply Module High Voltage Battery Terminal Point 9339825

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CPLA-14B673-AH

Land Rover Range Rover L405 Tailgate Hatch ECU Module Control Unit CPLA14B673AH

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7843332

Engine Wiring BMW F10 M5 F12 M6 Loom Harness Injection Valve Cyl. 5-8 7843332

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DWM-500021

Land Rover Discovery 3 L319 Battery Box Base Panel Outer Right O/S DWM-500021

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0907064CH

Volkswagen Touareg 7P BCM Body Comfort Module Control Unit 4H0907064CH

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G8971693

Audi A7 4G Door Harness Loom Cable Wiring Rear Left Right N/O/S 4G8971693

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7W93-11A134-AA

Jaguar XF 250 Power Adapter Battery Positive Terminal 7W93-11A134-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2139001726

Mercedes W205 W247 W253 Distronic Radar Sensor Control Unit Module A2139001726

€237.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7H0971691Q

Volkswagen Transporter T5 Sliding Side Door Wiring Loom Harness Cable 7H0971691Q

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L6951171A

Volkswagen Touareg 7L Ultrasonic Alarm Monitor Sensor Control Unit 7L6951171A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6G9T-19E624-DB

Ford Kuga C394 Heater Blower Fan Motor Resistor 6G9T-19E624-DB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2475464000

Mercedes C118 W177 C247 Positive Battery Cable Cover Trim Tray A2475464000

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR065819

Land Rover Discovery Sport L550 Starter Motor 14V 2.2 224DT Diesel EJ32-11001-AC

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5K0907159B

VW Golf Mk6 Alarm Signal Sound Impact Body Control Module Unit 5K0907159B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8843416

BMW G30 Battery Cell Module Supervision Circuit Control Unit 8843416

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9124585-SED

BMW E87 E90 PDC Parking Sensors Ultrasonic Set x2 Sedonarot - A79 9124585

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9797875

BMW U06 X1 U11 High-Voltage Battery Terminal Strip Bracket Mount Support 9797875

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W6907217A

Audi A5 F5 Front Windscreen Windshield Lane Assist Camera 8W6907217A

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7809680

Engine Wiring BMW F10 F11 N57 N57S Loom Cable Harness Injector Module 7809680

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5NA945208G-2

VW Volkswagen Tiguan 5N Rear Tail Light Outer Right O/S Harness Loom 5NA945208G

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055405203

Mercedes W205 Negative Cable Battery Lead Minus Pole Wiring A2055405203

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8F0959655D

Audi A5 8F Air Module Control Unit ECU Crash Control 8F0959655D

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7939168

Rain Sensor BMW F20 F21 F30 F31 Windscreen Light Solar Condensation Unit 7939168

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BK31-13D152-AF-2

Ford Transit Mk8 Headlight Headlamp Wiring Cable Front Right O/S BK31-13D152-AF

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9313616

BMW F30 F31 Driver's Side Door Wiring Electrical Loom Harness Cable 9313616

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. M8A2-9L468-AB

Range Rover Velar L560 Rear Subframe Wiring Harness Cable Loom M8A2-9L468-AB

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9827016

Mini F65 F66 F67 BMW F70 F74 B+ Power Junction Terminal 9827016

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009820512

Energy Distributor Mercedes W177 W212 Power Control Unit Module A0009820512

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L5971204

Porsche Cayenne 955 Washer Spray Nozzle Wiring Loom Cable 7L5971204

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. NNW500440

Range Rover L322 Four Wheel Drive Transfer Box Module NNW500440

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8636596

BMW 1 3 Series F20 F21 F30 F31 Line Cable Power Distribution Module 8636596

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BV6T-14B526-BC

Ford Focus Mk3 Voltage Stabilisation Control Module Bosch ECU BV6T-14B526-BC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AE8T-14A003-AA

Ford Fiesta Mk7 Fuse Box Cover Housing Lid Trim Cap Panel AE8T-14A003-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9137799

Door Wiring Mini Cooper R55 R56 R57 R58 R59 Passenger Cable 9137799

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K0035063D

Audi A6 C8 MIB2 Multimedia Navigation Radio Control Head Unit 4K0035063D

€664.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AV1T-14A583-AAC

Ford B-Max Mk1 Tailgate Boot Lid Loom Wiring Harness Cable AV1T-14A583-AAC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CK52-14687-ED

Range Rover L405 Rear Door Wiring Harness Ambient Left N/S CK52-14687-ED

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0906121F

Audi Q3 8U 2.0 TDI Fuel Pump Sender Control Relay Module Unit ECU 5Q0906121F

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0915429C

Audi A6 C7 Battery Positive Terminal Cover 8K0915429C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

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