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-Benz Vito W639 Fuse Box Cooling Outlet Pipe Air Duct A6395480174

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DH22-14B192-BA

Land Rover Discovery Sport L550 Relay 4-Pin Unit 12V 20A Black DH22-14B192-BA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2545289-1

Ford Transit Mk7 Alternator Generator 2.2 TDCI CC1T-10300-CE

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2198200764-2

Mercedes CLS C219 Rear Lamp Tail Light Wiring Cable Left N/S A2198200764

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q4959593P

Skoda Octavia IV Door Module Control Unit Front Driver's Side Door 5Q4959593P

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5WA959655H

Volkswagen VW Golf Mk8 Air Module Control Unit ECU Module 5WA959655H

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2139008530

Mercedes W213 W447 Transmission Gearbox Control Unit Module ECU A2139008530

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. F30-SCREEN-3

BMW F30 F31 Dashboard Dash Central Information Screen Android 10.25" Display

€237.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6826772

BMW F10 F20 F30 X5 F15 Navigation Sat Nav Head Unit High Control Module 6826772

€284.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1668200689

Antenna Amplifier Mercedes W176 Aerial Module Unit Rear A1668200689

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. XUE000030

Range Rover L322 Radio Antenna Amplifier Suppression Module Unit XUE000030

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DG93-10723-AE

Ford Mondeo Mk5 Battery Tray Box Cover Panel 2.0 TDCi DG93-10723-AE

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9287433

BMW F21 F22 Wiring Loom Door Drivers Side Front Right O/S 9340973

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8642704

Mini One F56 B38 102HP Petrol Engine ECU Control Unit DDE 8642704 Manual

€208.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. KK3T-14D502-MCD

Ford Transit Mk8 Manual Transmission Wiring Harness 2WD 2.2 TDCI BK3T-14D502-FED

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0005400502

Mercedes W212 W221 W447 W906 Adblue Injector Wiring Cable Loom A0005400502

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2035407308

Mercedes-Benz C-Class W203 Rear Left Right Door Wiring Loom Harness A2035407308

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2469004313

Gearbox Module Mercedes W176 Automatic Transmission Unit ECU A2469004313

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6925942

BMW E60 E61 Cable Loom Door Wiring Harness 6925942

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 95862083202

Porsche Cayenne 92A Fuel Tank Gauge Right O/S Sender Control Unit TDI 7P0919673

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5G6035577K

VW Volkswagen Golf GTI MK7 Roof Antenna Aerial Amplifier Right O/S 5G6035577K

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3AA959433-1

VW Volkswagen Passat B7 Convenience Body Control Module Unit ECU 3AA959433E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3C8971558AG

Volkswagen Passat CC Front Door Wiring Loom Harness Passenger Side 3C8971558AG

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 98661208300

Porsche Boxster 986 Rear Screen Window Heated Wiring Harness Cable 98661208300

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4F0959792P

Audi A6 C6 Front Door Lock Control Module Unit ECU Passenger Side 4F0959792P

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. C1BT-14B321-FF

Ford Fiesta Mk7 3Dr Air Module ECU Control Unit C1BT-14B321-FF

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2049057501

Mercedes W204 W212 Dashboard Light Sun Solar Sensor Unit A2049057501

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6882963

Air Module BMW F01 F02 LCI F07 GT F10 F11 F13 ECU ICM Control Unit 6882963

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2049004106

Parktronic Module Mercedes W204 PDC Parking Sensors Control Unit A2049004106

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9311296

Radio Player BMW F10 F11 F20 F21 F25 F30 F31 Alpine CD Champ 2 Head Unit 9311296

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009008709

Mercedes W213 Tyre Pressure Control Module Unit A0009008709

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0937132B

Skoda Superb Mk3 3V Fuse Box Lid Cover Trim Upper Panel 5Q0937132B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9290621

BMW F33 F83 M4 Convertible Top Phone Antenna Aerial Module CTM Unit 9290621

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2044404732

Mercedes W204 Estate PDC Wiring Rear Bumper Parking Sensor Cable A2044404732

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7555193

BMW F10 Control Unit Box F07 F11 Engine Ventilation Housing Box 7555193

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8E0971693P

Audi A4 B7 Door Card Speaker Harness Loom Cable Wiring Rear 8E0971693P

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. XUO000040

Range Rover L322 Radio Aerial Amplifier Module Control Unit XUO000040

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. HPLA-10307-BA

Range Rover Sport L494 Negative Battery Wiring Loom Harness Cable HPLA-10307-BA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2661538479-1

Mercedes W169 A150 Petrol M266.920 95HP Engine ECU Kit A2661538479 Automatic

€180.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. GJ32-15B484-AC

Range Rover Evoque L538 Rear Parking Sensor Wiring Loom GJ32-15B484-AC

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9125224

BMW 1 3 SERIES E87 E90 E91 Control Unit Airbag ECU NO CRASH DATA 9125224

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. KK3T-14D068-AD

Ford Transit Mk8 Fuse Box Power Distribution Relay KK3T-14D068-AD

€275.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5R3919294

Volkswagen Golf CD1 Park Parking Assist PDC Distance Control Module 5R3919294

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2035407608

Mercedes-Benz C W203 Front Left Right Door Wiring Loom Harness A2035407608

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1669007609

Mercedes ML W166 Door Control Module Unit ECU Front Right O/S A1669007609

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. K8D2-14632-AAD

Land Range Rover Evoque L551 Door Wiring Harness Rear Right O/S K8D2-14632-AAD

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. KCR12

Chip Power Chiptuning Box CRS KCR12 Control Unit Module Tuning Set

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L0959772D

VW Touareg Phaeton Heated Seat Control Module Unit 7L0959772D

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8E0941004AK-2

Audi A4 B7 Headlight Wiring Harness Cable Plug Right O/S 8E0941004AK

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2075452540

Mercedes-Benz E W207 Cabrio A207 Auxilliary Battery Bracket A2075452540

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8T0959792P

Audi A5 8T Front Door Control Module Right O/S Passenger Side 8T0959792Q

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2079058802

Roof Antenna Mercedes W204 W212 Shark Aerial Antenna Cable Harness A2079058802

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9294300

Dashboard Monitor BMW X3 F25 X4 F26 Onboard Central Display Screen 8,8" 9294300

€151.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CA6T-14B526-DC

Ford Fiesta Mk7 Start Stop Engine Module Control Unit ECU CA6T-14B526-DC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2469000012-2

Mercedes W176 W246 Radio Head Unit COMAND Navi Player Control Unit A2469000012

€170.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2053401800

Mercedes W205 Pipe Line Piping Side Battery A2053401800

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1729060105

Mercedes SLK R172 Rear Fuse Box SAM Relay Control Unit Module A1729060105

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6796905

BMW F01 F01N F02 F10 AHK Towing Hitch Tow Bar Control Module Unit ECU 6796905

€151.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9281068

Antenna Receiver BMW F33 F83 M4 Convertible Aerial DAB Unit 9281068

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4G8971036H

Audi A7 4G Front Door Wiring Loom Harness Passenger Side 4G8971036H

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2218704689

Mercedes W221 Sound Amplifier Radio Amplifier Module ECU A2218704689

€208.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5A81BC5

BMW F74 Rear Door Wiring Loom Harness Cable Left Right N/O/S 5A81BC5

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009007607

Mercedes-Benz E-Class W207 W212 Front Windscreen Windshield Lane Assist Camera

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9079003207

Mercedes W907 Air Suspension Level Control Unit Module Airmatic A9079003207

€123.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 80A971228AG

Audi Q5 MK2 FY 40TDI 2.0 Diesel Alternator Starter Wiring Loom 80A971228AG

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1669063901

Mercedes ML W166 Relay Module Box Under Rear Right Seat F4 A1669063901

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2040560

Ford Transit Connect Mk2 HV Battery Cable Loom Harness Wiring 2040560

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9803844-1

Mini Cooper Countryman R58 R60 R61 Aerial Roof Antenna Base Module 9803844

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L906018BB

Volkswagen Golf GTD Mk6 2.0 TDI CFGB Engine Control ECU 03L906018BB Manual

€165.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9233592

BMW F10 F11 Sound Amplifier Module Unit Harman/Becker 9233592

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. KK62-14N276-AE

Range Rover Sport L494 Battery Cable Wiring Loom Harness KK62-14N276-AE

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6919354

BMW E60 E61 Stereo System Central Bass Subwoofer Right O/S 6919354

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. KK3T-9K499-FCC

Ford Transit Mk8 Exhaust Emission Wiring Loom Harness KK3T-9K499-FCC

€165.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8849403

BMW U06 X1 U11Battery Air Guide Plate Cover Trim Housing 8849403

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. GV61-12A650-KA

Ford Transit Connect Mk2 1.5 TDCi 100HP Engine ECU GV61-12A650-KA Manual

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2058700210

Mercedes W205 Front Seat Ocuppancy Mat Control Module ECU Left N/S A2058700210

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2125406805

Mercedes W212 Door Wiring Cable Front Right O/S A2125406805

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2048204326

Mercedes W204 Interior Roof Cabin Light Panel Sensor Control Unit A2048204326

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9797877

BMW X1 U11 High-Voltage Battery Module Connector Unit 9797877

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0001501780

Ignition Coil Mercedes W202 W203 M111 Cable Connector A0001501780

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5G6035577J

VW Volkswagen Golf GTI MK7 Roof Antenna Amplifier AM/FM/TV Right O/S 5G6035577J

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A4539000106

Smart A453 Fortwo Electronics Module Control Unit A4539000106

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8516739-3

Mini Cooper D R55 R56 LCI R60 N47N Engine ECU Kit DDE 8516739 CAS3 Key Automatic

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9330058

BMW F15 Top Hifi Audio System AMP Amplifier Harman Kardon 9330058

€759.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2469067100-1

Mercedes W176 W246 C117 Fuse Relay Box Unit Cables Wiring Loom A2469067100

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059008143

Mercedes W205 Front Telephone Wireless Charging Load Wattage Module A2059008143

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6807634

BMW X5 F15 F20 F30 SRS Air Module Bag Control Unit Module ECU 6807634

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DH22-14B192-EA

Land Rover Discovery Sport L550 Relay 4-Pin Unit 12V 70A Grey DH22-14B192-EA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8792148

Navigation Headunit BMW F20 F22 F30 Mini F55 F56 Head Unit Basic Media

€104.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4G8035225G

Audi A6 C7 Avant Antenna Amplifier Upper Right O/S 4G8035225G

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9370431

BMW X1 Series F48 KaFAS Camera Assist Speed Limit Control 9370431

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. FG9T-14A067-EB

Ford Mondeo Mk5 Engine Bay Fuse Box 2.0 Diesel FG9T-14A067-EB

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8088723

Engine Wiring BMW X3M F97 X4M F98 Petrol S58 Module Sensors 1 Harness 8088723

€203.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8W0971534

Audi S5 F5 Earth Line Voltage Converter Starter Alternator Harness 8W0971534

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8573260-8

BMW F20 F21 116d ed Diesel N47N 116HP ECU Kit DDE 8573260 + Key + FEM Manual

€417.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1779005509

Door Module Mercedes C118 W177 H243 Rear Left N/S Door Control A1779005509

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9195956-1

Mini Cooper R55 R56 R57 CCC Navigation Navi Sat Nav Head Unit 9195956

€222.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7525434

Mini R52 R53 W11 Battery Cable Wire Harness Starter Base B 7525434

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. M8A2-14A076-BA

Range Rover Velar L560 Fuse Box Unit Upper Cover Cap Trim M8A2-14A076-BA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

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