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

€23.95

Free delivery: Aug 7 – 10

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: Aug 7 – 10

If paid before 14:00

Part no. 8574048

Mini F54 F55 F56 F57 F60 Engine Starter Motor Plug Bracket Holder Mount 8574048

€23.95

Free delivery: Aug 7 – 10

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: Aug 7 – 10

If paid before 14:00

Part no. A1669006307

Mercedes GLE C292 ML W166 Door Control Module Rear Left N/S A1669006307

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2135406831

Mercedes W213 Rear Door Wiring Harness Keyless Left Right N/O/S A2135406831

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7589971-10

BMW Mini One R56 N12 1.4 N12B14A 95HP Petrol ECU Kit DME 7589971 + CAS3 + 2 Keys

€161.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7P6035552M

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Left N/S 7P6035552M

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A1695400506

Mercedes W169 Front Bumper Parking Sensor Wiring Loom Cable Harness A1695400506

€47.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8506434

BMW E87 E90 LCI N47 118d 318d Diesel Engine Control Unit ECU DDE Manual Gearbox

€61.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. FK72-7L195-BA

Land Rover Discovery Sport L550 Vibration Damper Control Module FK727L195BA

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6949229-1

2 x Mini R52 Convertible DWA Door Alarm System Module Control Unit Set 6949229

€23.95

Free delivery: Aug 7 – 10

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: Aug 7 – 10

If paid before 14:00

Part no. 9274357

BMW 4 F32 Wiring Loom Harness Cable 9274357

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 04L903017D

Audi A4 B8 A5 8F 2.0 TDI Diesel Engine Alternator Generator 04L903017D

€70.95

Free delivery: Aug 7 – 10

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: Aug 7 – 10

If paid before 14:00

Part no. 3C0907651

Volkswagen VW Golf Mk6 1K Acceleration Sensor 3C0907651

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. JK62-01820-AF

Land Rover Range Rover Sport L494 Center Console Air Vent Grille JK62-01820-AF

€75.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9224686

BMW Mini Clubman R55 Cable Wiring Loom Splitdoor Door Rear Right O/S 9224424

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9496818

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

€23.95

Free delivery: Aug 7 – 10

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: Aug 7 – 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 7 – 10

If paid before 14:00

Part no. 8780776

Head Unit BMW F10 F20 F22 F30 Navigation Sat Nav GPS Unit High 8780776

€379.95

Free delivery: Aug 7 – 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 7 – 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 7 – 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 7 – 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 7 – 10

If paid before 14:00

Part no. A2439008400

Mercedes GLC X253 Sound Audio Amplifier Module Rear Harman A2439008400

€56.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7640875

Alternator Generator BMW F10 F20 F30 LCI Diesel Engine Unit Denso 180A 7640875

€32.95

Free delivery: Aug 7 – 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 7 – 10

If paid before 14:00

Part no. 3417586

Electronic Box BMW X3 E83 LCI 2.5si 3.0si N52N Control Unit Mount Holder 3417586

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. M8A2-14305-CB

Land Rover Range Rover Velar L560 Battery Starter Wiring 2.0D M8A2-14305-CB

€32.95

Free delivery: Aug 7 – 10

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: Aug 7 – 10

If paid before 14:00

Part no. 6960428

BMW 3 5 6 Series E60 E61 E63 E64 E90 E91 FBAS Analog Video Module Unit 6960428

€80.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7936365

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

€66.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7520912

BMW E60 E61 E63 E64 LCI Cover Electronic Box 7520912

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A0025428319

Mercedes W176 W204 C207 W212 C218 W246 Relay 4-Pin Black Hella 12V A0025428319

€23.95

Free delivery: Aug 7 – 10

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: Aug 7 – 10

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: Aug 7 – 10

If paid before 14:00

Part no. A1679008207

Telematics Module Mercedes W177 W247 Communication Control Unit ECU A1679008207

€113.95

Free delivery: Aug 7 – 10

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: Aug 7 – 10

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: Aug 7 – 10

If paid before 14:00

Part no. 1K0971349MR

Volkswagen Scirocco Mk3 Alternator Wire Wiring Cable Harness Loom 1K0971349MR

€66.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2469000005

Mercedes W176 PDC Parking Distance Control Module Unit A2469000005

€66.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9335298

BMW 1 Series F20 Front Left Door N/S Wiring Loom Harness Cables 9215715

€23.95

Free delivery: Aug 7 – 10

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: Aug 7 – 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 7 – 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 7 – 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 7 – 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 7 – 10

If paid before 14:00

Part no. 7L0142060A

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

€474.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9312764

Body Control Module BMW F10 LCI ECU Junction Box PL6 JBBFE III V2 9312764

€56.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6994419

BMW G20 Power Distribution Fusebox Cover Fuse Box Terminal 6994419

€23.95

Free delivery: Aug 7 – 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 7 – 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 7 – 10

If paid before 14:00

Part no. A2056200018

Battery Box Bracket Mercedes W205 W213 W238 Trim Holder Right O/S A2056200018

€23.95

Free delivery: Aug 7 – 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 7 – 10

If paid before 14:00

Part no. A2579005100

Mercedes Sprinter W907 Telematics Services Communication Module A2579005100

€113.95

Free delivery: Aug 7 – 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 7 – 10

If paid before 14:00

Part no. A0115453826

Mercedes W163 Data Connector Link Plug Wire Harness Pigtail A0115453826

€23.95

Free delivery: Aug 7 – 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 7 – 10

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: Aug 7 – 10

If paid before 14:00

Part no. 1K0937132F

Vw Golf 5 Audi A3 8P Seat Leon 1P1 Fuse Box Cover Trim Panel Housing 1K0937132F

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6J0035342C

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7L0937503A

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

€37.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A7899823500

Mercedes EQA H243 Engine Relay 20A ECU A7899823500

€51.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8516739

Mini One D R56 LCI R60 90HP N47N Engine Control Unit ECU DDE 8516739 Manual

€94.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 3417417-1

BMW X3 Series 1 E83 Boardmonitor Central Information Display Screen 6,5" 3417417

€260.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A0038202926

Mercedes W164 X164 W221 SRS Airbag Impact Crash Sensor A0038202926

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2168204726

Mercedes W221 Bluetooth Control Module Mobile Phone Interface A2168204726

€23.95

Free delivery: Aug 7 – 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 7 – 10

If paid before 14:00

Part no. 6949229-2

4 x Mini R52 Convertible DWA Door Alarm System Module Control Unit Set 6949229

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2055404834

Mercedes W205 GLC C253 Touch Pad Controler Wiring Harness Loom A2055404834

€47.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. DV6T-14301-AD

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8K0959754H

Audi A5 8T Remote Button Smart Key Fob Unit 8K0959754H

€23.95

Free delivery: Aug 7 – 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 7 – 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 7 – 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 7 – 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 7 – 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 7 – 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 7 – 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 7 – 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 7 – 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 7 – 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 7 – 10

If paid before 14:00

Part no. A2075405205

Mercedes W207 Door Cable Wiring Loom Front Left Right Door N/O/S A2075405205

€23.95

Free delivery: Aug 7 – 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 7 – 10

If paid before 14:00

Part no. A2469008516

Parking Brake Module Mercedes W176 W246 Electric Control Unit ECU A2469008516

€23.95

Free delivery: Aug 7 – 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 7 – 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 7 – 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 7 – 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 7 – 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 7 – 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 7 – 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 7 – 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 7 – 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 7 – 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 7 – 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 7 – 10

If paid before 14:00

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