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 W204 W212 Multimedia Interface Unit Module Bracket Mount A22045451040

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4G8971085BL

Audi A7 4G Rear Bumper Wiring Harness Cable Sensor PDC Radar 4G8971085BA

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8E1971035DF

Audi A4 Door Harness Loom Cable Wiring Front Left Right N/O/S 8E1971035DF

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6C1T-14335-BB

Ford Transit Mk7 Antenna Amplifier Control Unit Module 6C1T-14335-BB

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2075406010

Mercedes W207 Front Bumper PDC Wiring Parking Sensor Loom Harness A2075406010

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DK62-14N144-BE

Range Rover L405 Positive Battery Cable Wiring Harness Loom DK62-14N144-BE

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CK52-13554-AE

Land Range Rover L405 Tailgate Camera System Control Module CK52-13554-AE

€246.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8624341

BMW F30 LCI Fuse Box Fusebox Holder Support Mount Bracket Carrier 8624341

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7G92-15K868-AD

Land Rover Freelander 2 L359 Parking Sensor Wire Loom Rear Bumper 7G92-15K868-AD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L0142060A

Porsche Cayenne 92A Hybrid Clutch Hydraulic Actuator Unit Motor 7L0142060A

€474.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7537612

BMW X5 E53 E60 E81 E87 E90 Engine Vacuum Control Electric Valve 7537612

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6949381

BMW E65 E66 Front Door Wiring Door Cable Harness Loom 6949381

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4L0971035AH

Audi Q7 4L Door Card Wiring Loom Harness Cable Front Left N/S 4L0971035AH

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2118707326

Mercedes W211 C219 Door Control Unit Module Front Left N/S A2118707326

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2034404532

Mercedes CLC-Class CL203 Rear Parking Sensor Wiring Loom Cable PDC A2034404532

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1698208626

Mercedes-Benz A B W169 W245 Door Control Module Right Rear O/S A1698208626

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. AG9N-10C679-DB

Ford Mondeo Mk4 Battery Cable Negative IBS AG9N-10C679-DB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CK52-14N144-CE-1

Range Rover L405 Battery Positive Plus Fuse Cable Loom CK52-14N144-CE

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6822250

Mini F55 F56 F57 F60 Cooper S SD Electric Fan Relay Module Unit 6822250

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03E971815A

Volkswagen Polo 6R Cover Wiring Loom Guide Bracket Trim 03E971815A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06L971627E

Volkswagen Golf R Mk7 Engine Injectors Wiring Harness 2.0 TFSI CJXB 06L971627E

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 5Q0907361G

Seat Leon Mk3 5F Fuse Box Control Unit Module Relay Box 5Q0907361G

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. HR3T-15604-HFE

Ford Mustang GT Mk6 BCM Body Control Module Alarm Keyless Entry HR3T-15604-HFE

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9321022-1

Mini Cooper F55 F56 F57 B+ Junction Terminal Box 300-400 W 9321022

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9167237

BMW E92 F32 E61 Seat Belt Module Control Unit LCPA ECU 9167237

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L906018JR

Audi A4 B8 2.0 TDI CJCB 136HP Engine Control Unit Module ECU 03L906018JR Manual

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7419610-1

BMW F30 F31 LCI Headlight LED Module Insert Light Source Control Unit 7419610

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BV61-12A650-DGB-1

Ford Focus Mk3 1.6 TDCI T1DB 115HP Engine Control ECU BV61-12A650-DGB Manual

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4L0971104S

Audi Q7 4L Rear Bumper Wiring Loom PDC Harness Parking Sensor 4L0971104

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2124405533

Mercedes W212 Wiring Loom Cable Door Front Left Right N/O/S A2124405533

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1669003309

Mercedes W176 W204 W246 Headlight Headlamp Range Control Unit Module A1669003309

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9210861

BMW F10 F11 Power Distribution Fuse Box Front 9210861 61149210861

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055455400

Mercedes W205 Battery Power Connection Wiring Bar Rail Busbar A2055455400

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9359037

BMW F46 Gran Tourer 3rd Row Seat Wiring Harness Loom 9359037

€23.95

Free delivery: Aug 5 – 10

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 5 – 10

If paid before 14:00

Part no. LHD-R56-CARPLAY

Mini R56 R57 Display Screen Instrument Cluster Speedo Android CarPlay 4+64GB LHD

€284.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DK52-14B484-AC

Range Rover L405 Body Control Module Unit BCM ECU DK52-14B484-AC

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7515197

BMW Mini Cooper One R50 W10 Battery Cable Plus Pole 7515197

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. MK83-15K622-CA

Land Rover Range Rover Velar L560 Comfort Control ECU Transceiver MK83-15K622-CA

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. K8D2-14N172-AD

Range Rover Evoque L551 Battery Box Wiring Cable Hybrid K8D2-14N172-AD

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3453590

Mini Cooper R57 R58 Antenna Bumper Mounted FM/DAB Wiring 3453590

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7542615

BMW 1 3 5 6 7 Z4 Series E87 E90 E60 E64 E65 E85 Power Distribution Box 7542615

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1698208526

Mercedes-Benz A B Class W169 W245 Door Control Module Left Rear N/S A1698208526

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8519663-16

Mini Cooper SD R60 R61 ALL4 N47N 143HP ECU Kit DDE 8519663 CAS3 Key Manual

€194.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6G91-10663-AD

Ford Mondeo Mk4 Battery Tray Holder Bracket Support 2.0 Petrol 6G91-10663-AD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8572439-4

BMW F30 F31 N57N 330d 258HP Diesel Engine ECU Kit DDE 8572439 FEM Key Automatic

€213.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2T1T-14A584-BG

Ford Transit Connect Door Wire Harness Loom Front Driver's Side 2T1T-14A584-BG

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 46868567

Vauxhall Movano C Electric Power Steering Wiring Harness 2.2 Diesel 46868567

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8507880

BMW 1 3 Series F20 F21 F30 F31 N47N Wiring Loom Harness Engine Gearbox Module

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0115453826

Mercedes W163 Data Connector Link Plug Wire Harness Pigtail A0115453826

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9197354

BMW X1 X3 E84 F25 Cigarette Lighter Socket With Cable 9197354

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4G8971365

Audi A7 4G Seat Cable Front Left Right N/O/S Wiring Loom Harness 4G8971365

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5WA937132A

VW Volkswagen Caddy SB Golf GTI CD1 Fuse Box Cover Top Lid Housing 5WA937132A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 896500D040

Toyota Yaris MK1 Power Steering Column Control Unit Module 896500D040

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4N0959651D

Audi Q5 FY Crash Impact Sensor Unit Module Left Right N/O/S 4N0959651D

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L906018KR-1

Seat Ibiza 6J IV 2.0 TDI CFHD 143HP Engine Control ECU 03L906018KR Manual

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0907705K

Audi A8L 4H Steering Angle Steering Wheel Column Control Module ECU 4H0907705K

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4F1971845A

Audi R8 42 Fuse Box Electrical Connector Relay Control Unit Module 4F1971845A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. GB3T-14D068-KC

Ford Ranger Mk3 Fuse Box Relay Panel 2.2 TDCI 4x4 GB3T-14D068-KC

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9247386

BMW X3 F25 Body Control Module ECU Junction Box JBBFE III V9 Lear 9247386

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L5971104

Porsche Cayenne 955 9PA Rear Bumper PDC Sensor Wiring Loom Cable 7L5971104

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8044503

BMW F06 F10 F12 F13 Fuel Injectors Wiring Loom Harness Cable 8044503

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4K5971030D

Audi A6 C8 Door Card Wiring Loom Harness Cable Front Passenger Side 4K5971030D

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8J0951177

Audi TT 8J Interior Roof Alarm Motion Ultrasonic Sensor 8J0951177

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2219004704

Mercedes-Benz S W221 Comand 6-Changer CD Radio Head Unit DVD Navi A2219004704

€807.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 83A945092-2

Audi Q3 F3 LED Tail Light Rear Right O/S Plug Wire Cable Connector 83A945092

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5B824D2

BMW F74 Gran Coupé Emergency Module Telematics Control Unit 5B824D2

€303.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8J0907376A

Audi TT 8j TTS Magnetic Suspension Damper Control Unit 8J0907376A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8512292

BMW E90 E91 LCI N47N 318d 143HP Engine Control Unit ECU DDE 8510832 Manual

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0907530AG

Skoda Octavia 5E Mk3 Superb Mk3 Gateway Control Unit Module 5Q0907530AG

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR037711-2

Range Rover Evoque L538 Rear Tail Light Lamp Connector Wire Left N/S LR037711

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L906022RC-1

Audi TT 8J 2.0TDI 170HP CBBB Quattro Engine ECU Kit BCM Key 03L906022RC Manual

€170.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3T9035577A

Skoda Superb Mk2 B6 Aerial Antenna Amplifier Module Control Unit 3T9035577A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2469054201

Mercedes CLA C117 W176 Aerial Booster Antenna Amplifier A2469054201

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7537365

Cable Wire BMW E60 E61 E81 E87 E90 Tubing For Clamp 7537365

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. YMD001991

Range Rover L322 Parking Sensor PDC Wiring Harness Cable YMD001991

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. KK62-14N244-AE

Range Rover Sport L494 Alternator Wire Harness Cable Hybrid KK62-14N244-AE

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6931987

BMW 7 Series E65 E66 E67 Control Unit Voice Input System Module 6931987

€23.95

Free delivery: Aug 5 – 10

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 5 – 10

If paid before 14:00

Part no. 9329345

BMW F20 F21 F30 F31 Bluetooth Telephone Control Module Unit 9329345

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8387551

BMW 3 Series E46 Battery Positive Cable Fuse Box Base B 8387551

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4L0971036K

Audi Q7 4L Door Wiring Loom Harness Wire Cable Front Right O/S 4L0971036K

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6929726

BMW E65 E66 Front Seat Wiring Harness Loom Cable Left N/S 6929726

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2661503033

Mercedes W169 W245 M266 Petrol Engine Wiring Harness Loom A2661503033

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4E0035541S

Audi Q7 4L Radio Multimedia Receiver Control Module Unit 4E0035541S

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. D1BT-14D212-EB

Ford Transit Connect Bluetooth Interface Control Module ECU D1BT-14D212-EB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8S0972752

VW Volkswagen Tiguan 5n Passat B8 Wiring Loom Harness Plug Conctact 8S0972752

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0945096H-2

Audi A8 D4 Rear LED Light Lamp Taillight Right O/S Harness Loom Wire 4H0945096H

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2185403005-1

Mercedes CLS C218 Front Door Wiring Harness Loom Passenger Side A2185403005

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9204849

BMW X5 X6 Series E70 E71 Airbag Control Module ECU Unit 9204849

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2711500420

Mercedes W204 M271 Solenoid SOLV Valve Wiring Harness Petrol A2711500420

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7356250

BMW E92 LCI Coupe Mini R56 R57 Xenon Headlight Ballast Headlamp Control 7356250

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 859800D060

Toyota Yaris XP10 Door Control Module Unit ECU 859800D060

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1812480

Ford Focus Mk3 Seat Air Module Sensor Front Passenger Side BM51-A625B02-AC

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8602991

Mini F54 F55 F56 F57 F60 Battery Wire Cable Negative Earth Lead 8602991

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CV1T-14B533-AG

Ford Fiesta Mk7 Front Door Module Control Unit ECU Passegner Side CV1T-14B533-AG

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06N907309A-1

Audi A4 B9 8W 35 TFSI DMSB 150 HP Engine ECU Kit Body + Key 06N907309A Automatic

€379.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CK52-14301-BC

Range Rover L405 Negative Battery Terminal Cable Lead Wiring CK52-14301-BC

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

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