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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Alternator Generator Mercedes W176 W246 Diesel Engine Bosch 175A A0009063822

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2215409107

Mercedes W221 Instrument Panel Illumination Wiring Harness Cable A2215409107

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1705451240

Mercedes R170 C215 W220 W463 Engine Control Module Holder Bracket A1705451240

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03L906018CR

Seat Ibiza 6J IV Mk4 2.0 TDI CFHD Engine Control Unit ECU Set 03L906018CR Manual

€222.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8R0035223F

Audi A4 B8 A5 8T Stereo Radio Sound System Speaker Amp Amplifier 8R0035223F

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7075947-1

BMW 5 7 Series E60 E61 E65 E66 Front Left Seat Angle Adjustment Drive 7075947

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. CX23-18K891-AA

Land Rover Discovery Sport L550 Aerial Antenna Amplifier Unit CX23-18K891-AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8K0971687B

Audi A4 B8 Door Harness Loom Cable Wiring Rear Left Right N/O/S 8K0971687B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1679006613

Mercedes W177 Sliding Roof Module Sunroof Panoramic Control Unit A1679006613

€85.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. BJ32-14290-AGD

Range Rover Evoque L538 Fuse Box Relay Wire Harness BJ32-14290-AGD

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 99761266100

Porsche Boxster Cayman 987 Rear Bumper PDC Parking Sensor Wiring 99761266100

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. CK52-14A073-CB

Range Rover L405 Fuse Relay Box Housing Diesel CK52-14A073-CB

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1665400141

Mercedes W166 Petrol Engine HV Battery Earth Ground Line Cable Wire A1665400141

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8576341-13

BMW F20 F21 116d 116HP N47N Engine ECU Control Unit DDE Kit 8576341 Manual

€165.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6822094

Mini F54 F55 F56 F57 Radio Sat Nav DAB Basic Media Player Head Unit 6822094

€189.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0015467435

Battery Cover Mercedes W906 Battery Positive Pole Cover Red A0015467435

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6399001001

Mercedes W639 PDC Parking Park Sensor Distance Control Module A9064460046

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4H0907064FH

Audi A6 C7 BCM2 Comfort Body Control Module Electrical Unit ECU 4H0907064FH

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1Q0919283A

Volkswagen Eos 1F Parking Aid PDC Sensor Control Unit Module ECU 1Q0919283A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2466200514

Mount Support Mercedes W176 Battery Bracket Holder A2466200514

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. XUC000262A

Land Rover Discovery 3 L319 Aerial Antenna Amplifier Module Unit ECU XUC000262A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6C0907361D

Audi A1 8X Fuse Box Control Module Relay Box 6C0907361D

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. CK52-18C951-AC

Range Rover L405 Speaker Wiring Loom Harness Cable CK52-18C951-AC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6808577

Mini F55 F56 BDC Body Domain Controller Control Unit Module 6808577

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W0971035R

Audi A4 B9 Front Door Wiring Harness Cable Loom Driver Side 8W0971035R

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A9065420044

Mercedes W906 Bracket Mount Fuse Distribution Box A9065420044

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8612576

BMW X1 F30 F31 LCI Starter Motor Engine 8612576

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9890599

BMW F90 M5 G11 G30 Air Module Crash Control Unit 9890599

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 079971627R

Audi RS4 B8 RS5 8T Injector Wiring Loom Harness 4.2 V8 FSI Petrol 079971627R

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 83A971392

Audi Q3 RSQ3 F3 Seat Belt Warning Wiring Harness Centre Left N/S 83A971392

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6949080

BMW E90 E91 E92 E93 Seat Cross Member Wiring Cable Channel Duct 6949080

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 954104H411

Hyundai H-1 Body Control Module Control Unit BCM ECU Module 95410-4H411

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2465407711

Mercedes W176 Door Harness Loom Cable Wiring Rear Left Right N/O/S A2465407711

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8643126

BMW F06 F12 F13 M6 F10 M5 S63N 560HP Engine Control Module 8643126 Automatic

€541.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2055404003

Mercedes W205 Starter Alternator Wiring Harness Loom Cable OM651 A2055404003

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8714364

BMW F44 Gran Coupé Rear Door Wiring Loom Harness Right O/S Side 8714364

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9218697

BMW X6 E71 Central Woofer Bass Speaker Stereo Subwoofer N/S 9218697

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8678972-1

BMW E39 F40 F44 F45 F46 F48 Mini F54 F55 Engine Harness Loom Cable Wire 8678972

€75.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7L5951171

Porsche Cayenne 92A Immobilizer Alarm Control Unit Sensor Module 7L5951171

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. FW93-18K942-AB

Land Rover Discovery Sport L550 Aerial Antenna Amplifier Unit FW93-18K942-AB

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6511508300

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

€170.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. CH22-14369-CB

Land Rover Discovery 4 L319 Front Bumper Wiring Harness Cable CH22-14369-CB

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2048701126

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

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8574380-1

BMW F10 520d N47N 184HP Engine Control Unit ECU DDE 8574380 Automatic

€165.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8654466-1

BMW F45 225i 231HP B48 Engine ECU Kit Unit DME 8654466 BDC Key Automatic

€664.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1870892

Ford Mondeo Mk5 Starter Motor 12V 2.0 TDCi Diesel DS7T-11000-LE

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2048207485

Mercedes W204 Front Door Control Unit Module Right O/S A2048207485

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. HPLA-7C078-BKD

Range Rover Sport L494 Automatic Gearbox Wiring Loom Harness HPLA-7C078-BKD

€80.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W0971534A

Audi A4 B9 A5 F5 Earth Minus Negative - Battery Wire Cable Lid 8W0971534A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6921309

BMW E65 E66 Centre Console Front Armrest Tray Cables Wiring Set 6921309

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2229001609

Mercedes W222 Sound Amplifier Control Unit Module ECU A2229001609

€379.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. D1BT14D212NA

Ford Transit Connect Mk2 II Bluetooth Control Module Unit ECU D1BT14D212NA

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 06L971627AA

Audi S3 8V Seat Leon Cupra 5f Injector Wiring Loom Harness 2.0 TSI 06L971627AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9388183

BMW F45 Active Tourer Body Control Module ECU 9388183

€132.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0465455728

Mercedes A207 W212 S212 Wiring Harness Plug Connector Black 2-Pin A0465455728

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A7A0B8

Bmw U06 U10 F70 Engine Wiring Wire Harness Loom Servotronic Cable 5A7A0B8

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1644403801

Mercedes ML350 W164 Gateway ECU Control Module Unit A1644403801

€303.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1644400650

Mercedes W164 W251 Front Wiring Loom Harness Seat Cable Loom A1644400650

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4L0035652B

Audi Q7 4L MMI Multimedia Radio CD Player Sat Nav Head Unit 4L0035652B

€227.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7624617-1

BMW F20 F21 F30 F31 F32 Cable Alternator Starter Base B 7624617

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2229063302

Fuse Box Mercedes W205 W222 Engine Compartment SAM Module Relay Unit A2229063302

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3AA906337

Volkswagen Passat B7 Engine ECU Control Module Mount Cover Carrier 3AA906337

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6822680

Camera Kafas BMW F20 F21 F22 F87 LCI Front Windscreen Camera 6822680

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. E88-SCREEN

BMW E88 Dashboard On-Board Screen Information Display Touch Monitor Unit

€222.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2464070

Ford Kuga C482 Engine Acoustical Warning Speaker 2.5 FHEV Petrol LJ6T-19J215-BC

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6C0937132C

Audi A1 S1 8X Fuse Box Relay Top Upper Cover Cap Flap 6C0937132C

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6797031

BMW F25 Shock Absorber Sensor Adapter Wiring Loom Cable Front Axle 6797031

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7579155-1

Starter Motor BMW X5 E70 LCI X6 E71 Z4 E89 N20 N55 Petrol Engine 7579155

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AM5T-19E663-AC

Ford Focus Mk3 Sunlight Sun Light Solar Sensor Unit AM5T-19E663-AC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. EJ32-14290-CGC

Range Rover Evoque L538 Engine Bay Fuse Box EJ32-14290-CGC LR046377

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8734824

BMW F21 F30 LCI G30 X1 F48 X3 G01 Radio CD Multimedia MP3 Head Unit 8734824

€327.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 04L907309E-3

Audi A3 8V 1.6 TDI CRKB 110HP Engine Control ECU Kit 04L907309E Manual

€165.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6949226-2

4 x BMW E63 E64 DWA Door Alarm System Module Control Unit Set 6949226

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8J0035223B

Audi TT 8J Audio Amplifier Radio Lear Sound Unit 8J0035223B

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4L0971035G

Audi Q7 4L Door Card Wiring Harness Cable Loom Front Driver's Side 4L0971035C

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4K5971693AS

Audi A6 C8 Door Card Trim Wiring Harness Loom Rear Left Right N/O/S 4K5971693AS

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5H0998476

Volkswagen Golf Mk8 CD1 Headlight Ballast Module Control Unit Left N/S 5H0998476

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W0907063CC

Audi A4 B9 BCM Body Control Module Comfort Unit ECU 8W0907063CC

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DH52-18C815-BD

Land Rover Discovery 4 L319 Radio Head Unit DAB CD Player CH22-044H94-BAW

€123.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. GJ32-13W030-DC-2

Land Rover Evoque L538 Front Headlight Headlamp Wiring Left N/S GJ32-13W030-DC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2909003001

Mercedes C238 E53 4matic Transfer Case Torque Distribution Control ECU

€379.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2059008015

Mercedes W205 W447 Radio Multimedia Head Unit Cd Player A2059008015

€474.95

Free delivery: Sep 11 – 15

If paid before 14:00

Part no. 9381884

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

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. MICROLISE-MTU4-A-TRACKING-MODULE-UNIT

Volkswagen Caddy Maxi 2k Microlise MTU-4A Tracking Module Unit ECU Control

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9346566

BMW F45 F46 X1 F48 X2 F39 Negative Battery Cable Terminal Wiring 9346566

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A4475450069-2

Mercedes Vito W447 Control Unit Fuse Box Compartment Mount A4475450069

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7615981-4

Mini Cooper R55 R56 LCI N16 122HP Engine Control ECU DME 7615981 Automatic

€227.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6C1113W029BG-2

Ford Transit MK7 Headlamp Light Lamp Front Right O/S Harness Wire 6C1113W029BG

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0325453032

Mercedes W220 Automatic Gearbox Control Unit Module ECU A0325453032

€123.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009050110

Mercedes W204 W212 W221 Blind Spot Radar Sensor Left Right N/O/S A0009050110

€270.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5N0810773E

Volkswagen Tiguan 5N Fuel Filler Flap Actuator Release Servomotor 5N0810773E

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009054807

Mercedes W118 W177 W206 W247 NOX Sensor A0009054807

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2475455500

Mercedes W177 Control Unit Bracket Amplifier Holder Mount Carrier A2475455500

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2215401833

Mercedes W221 Door Harness Left Right N/O/S Rear Door Wiring Loom A2215401833

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2465402705

Mercedes W176 Door Harness Loom Cable Wiring Front Left Right N/O/S A2465402705

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2059008218

Telematics Module Mercedes W176 W205 W218 Communication Control Unit A2059008218

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009000800

Mercedes W204 W207 W212 Tyre Pressure Monitor Control Unit Module A0009000800

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5K0945094T-2

Volkswagen Golf Gti 5k Rear Lamp Inner Tailgate Right O/S Harness 5K0945094T

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 056800-2120

Ford Ranger Mk4 Relay Control Unit 12V Green Z5A1 056800-2120

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

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