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 F20 F21 F22 F23 LCI DAB Navigation Head Control Unit Module Business 9875929

€170.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 83A945094D-1

Audi Q3 RSQ3 F3 Rear Tail Light Lamp LED Right O/S Harness Wire Loom 83A945094D

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2469066300-2

Mercedes W246 Rear Light Trunk Tailgate Wiring Inner Left N/S A2469066300

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6912244

BMW Z4 E85 Rear Bumper Antenna Mounted Aerial Unit FM 6912244

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8R0971693B

Audi Q5 8R Rear Door Card Wiring Loom Left Right N/O/S 8R0971693

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7936365

Mini F55 F56 F57 Integrated Supply Module Z11 Control Unit Module 7936365

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DM5T-19A164-AA

Ford Focus Mk3 AUX Connector Adapter Port Socket Outlet DM5T-19A164-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K0907530L

Audi TT 8J Volkswagen Golf Mk5 Gateway Control Unit Module ECU 1K0907530L

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P0915181B

Audi A1 8X Negative Battery Terminal Cable Wiring 7P0915181B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9131734

BMW E81 E82 E88 E92 Passenger Seat Wiring Memory Loom Harness Cable 9131732

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2048701126

Mercedes S204 Door Module Rear Left N/S Control Unit ECU A2048701126

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2059000146

Mercedes W205 Display Screen Instrument Cluster Speedo Meter Sat Nav A2059000146

€455.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2056186000

Mercedes W205 W238 Rear Battery Holder Bracket Mount Strap Clamp A2056186000

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 05E972627B

Volkswagen Golf SV 1.5 TSI DADA Automatic Engine Wiring Harness 05E972627B

€108.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. FK72-7L195-BA

Land Rover Discovery Sport L550 Vibration Damper Control Module FK727L195BA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6887358

BMW F10 F11 EMF Module Parking Brake Unit Electric Control 6863800

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 83F971104F

Audi Q3 F3 Rear Bumper PDC Wiring Loom Cabling Parking Sensor 83F971104F

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8168035-1

BMW E60 Trunk Open Cable Boot Lid Tailgate Release Wiring 8360676

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129001900

Mercedes W164 W204 W221 W251 Fuel Pump Module Control Unit A2129001900

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5A67847

BMW F74 Gran Coupé Crash Impact Sensor Door Front Left Right N/O/S 5A67847

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2135402870

Ground Cable Mercedes C238 Fuse Box Wire Prefuse Box Wiring A2135402870

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0035225L

Audi A8 D4 4H Aerial Antenna Amplifier AMP Booster Module 4H0035225L

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K0971349MR

Volkswagen Scirocco Mk3 Alternator Wire Wiring Cable Harness Loom 1K0971349MR

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GH22-14K016-EA

Land Rover Discovery 4 L319 Fuse Box Upper Lid Cover Panel GH22-14K016-EA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9459681

Seat Module BMW F20 F30 F32 F33 X1 F48 X5 F15 Front Control Unit ECU 9459681

€118.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2465406809

Mercedes W176 W246 Wiring Loom Cable Door Rear Left Right N/O/S A2465406809

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. HPLA-14F392-JB

Land Range Rover Sport L494 Air Suspension Module Control ECU HPLA-14F392-JB

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9496818

BMW G60 G61 G68 U10 U11 U12 Impact Crash Accelerating Sensor 9496818

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AC1T-9K499-FNA-1

Ford Transit Mk7 Engine Bay Fuse Box Wiring Loom 2.2 TDCi AC1T-9K499-FNA

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F1971693D

Audi A6 C6 Rear Door Wiring Left Right N/O/S Harness Loom Cable 4F1971693D

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2449488

Head Unit Mini F55 F56 Navigation Head Unit Radio DAB Media Player 2449488

€332.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6949382

BMW E65 E66 Rear Door Wiring Harness Loom Cable 6949382

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6801327

BMW X5 F15 Wiring Harness Loom Cable 6801327

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0959593B-1

VW Golf 5G Audi S3 A3 8V Door Module Control Unit Front Driver Side 5Q0959593B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GOLF-5K-SCREEN-4

VW Golf Mk5 Mk6 Passat B6 B7 Car Radio Display MMI Multimedia Touch Screen 7"

€237.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7537612-1

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

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9311280

BMW X3 F25 Fan Heater Blower Unit Motor Wiring Cable Harness Loom 9311283

€33.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 06A903143P

Audi TT 8N Alternator Bracket Mount Holder 06A903143P

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03C903023S

Audi A1 8X 1.4 TSI CAXA Alternator 03C903023S

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9151516

BMW E60 E63 E64 LCI Body Control Unit Module 9151516

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8650701-1

BMW F80 M3 F82 F83 M4 S55 431HP Engine Module ECU DME Kit 8650701 Automatic

€1,125.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9389070-1

BMW F36 Fuse Box Control REM Electric Power Distribution 9389070

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2038000178

Mercedes-Benz C CLK Class W203 C209 Vacuum Solenoid Valve A2038000178

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7648785

BMW i3 i01 Battery Cell Module Supervision Circuit Control Unit 7648785

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9270365

BMW F20 F21 F30 F31 F32 Radio Professional CD DAB Head Unit 9299268

€61.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9140179

BMW F10 Radio Antenna Amplifier Suppression Filter 9140179

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6J0035342C

Seat Ibiza FR 6J Dashboard MMI Multimedia AUX Socket Interface Box 6J0035342C

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7L0937503A

Volkswagen Touareg 7L Fuse Box Relay Control Unit Module 7L0937503A

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A7899823500

Mercedes EQA H243 Engine Relay 20A ECU A7899823500

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9231179

Antenna Amplifier BMW F30 F80 M3 F82 M4 Rear Aerial Booster AM/FM DAB 9231179

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CK52-14B518-ED

Range Rover L405 Door Wiring Loom Harness Cable Rear Right O/S CK52-14B518-ED

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. FK72-19C166-BD

Land Rover Discovery L550 Multimedia USB SD Card Port Socket FK72-19C166-BD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9228491

BMW 5 Series F10 ECU Body Control Module V2 Junction Box 61359228491 9228491

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2215406562

Mercedes W204 Petrol Fuel Pump Control Unit Module A2215406562

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9326204

BMW X3 F25 B+ Distribution Box Battery Power Front Control Unit Point 9227458

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9285275

BMW X3 F25 X4 F26 Bus Interface 60 Ohm Control Module Unit ECU 9285275

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BJ32-14D618-AB

Land Rover Discovery L550 Front Door ECU Control Unit Right O/S BJ32-14D618-AB

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2055400428

Battery Wiring Mercedes GLC X253 C253 Diesel OM651 Starter Cable A2055400428

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2055404834

Mercedes W205 GLC C253 Touch Pad Controler Wiring Harness Loom A2055404834

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DV6T-14301-AD

Ford Transit Connect Negative Battery Cable Wiring DV6T-14301-AD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2195406207

PDC Wiring Mercedes W211 W219 Front Bumper Parking Sensor Loom Cable A2195406207

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9381884

Mini F54 F55 F56 Antenna Amplifier Active Sound Module Control Unit 9381884

€89.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0919275-SDA

Skoda Octavia 1Z PDC Parking Sensor 4H0919275 Anthracite Grey Metallic - F8J

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8506657

BMW X3 F25 Starter Motor Diesel Engine 12V Bosch 8506657

€28.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

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: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. 8624341

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

€23.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. 7L0142060A

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

€474.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A9065410400

Battery Bracket Mercedes Sprinter W906 W910 Mount Trim Holder A9065410400

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7N0959793J

VW Volkswagen Sharan 7N Driver's Side Door ECU Module Control Unit 7N0959793F

€42.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. A2118707326

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

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AG9N-10C679-DB

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

€23.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

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: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. 7527610-13

MINI One R50 W10 90HP Engine ECU Control Unit Module DME 7527610 Automatic

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5A0BD89

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

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0907361G

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

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2079001200

Door Module Mercedes C207 W207 Front Right O/S Control Unit ECU A2079001200

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6511508300

Engine Wiring Mercedes W910 OM651.958 Diesel Harness Loom Cable A6511508300

€170.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1779004106

Door Module Mercedes C118 W177 W247 Front Right O/S Control Unit A1779004106

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6928523

BMW 3 Series E46 M47N Diesel Negative Earth Cable Battery 6928523

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8679681

BMW F45 i3 i01 Mini F60 High Voltage Connector 8679681

€32.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. 6978265

BMW Z4 E85 E86 Roadster Interior Fuse Box 6978265

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9167237

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

€23.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. 9359037

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

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9273597

BMW F01 F10 F11 Audio Player Rear DVD Background ECE US Head Unit 9273597

€151.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2229002014

Mercedes X253 Door Module Rear Right Control Unit A2229002014

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7855481

BMW F90 M5 F92 M8 Oil Level Sensor Wiring Harness Loom Cable 7855481

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009050038

Mercedes W212 Multi-Purpose Windscreen Camera Control Unit Module A0009050038

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2049003509

Mercedes W204 S204 Radio Head Unit Sat Nav CD Player 2049003509

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2049007508

Mercedes W204 Display Screen Monitor Radio Sat Nav Navigation Unit A2049007508

€28.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

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