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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Audi A6 C7 4G Door Card Harness Loom Cable Wiring Rear Left N/S 4G5971693C

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8J0971349S

Audi TT 8J Alternator Main Cable Wiring Harness Loom CBBB Manual 8J0971349S

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. FK72-14F681-AH

Land Rover Discovery Sport L550 Gateway Module Control Unit FK72-14F681-AH

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5F0907159E

Seat Leon Mk3 III Cupra 5F Body Impact Sound Control Module Unit 5F0907159E

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2751445

Mini Cooper One R56 R55 R57 R58 LCi Retaining plate fuse box SPEG 2751445

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0937084BS

Audi TTS FV 8S BCM Body Control Module Unit 5Q0937084BS

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8Z0941824C

Audi A4 S4 8H A6 S6 4B Battery Terminal Fuse Box Power Control Unit 8Z0941824C

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8K0971228AA

Audi A4 A5 S5 8T 8K 3.0 TFSI Alternator Wiring Harness Loom Cable 8K0971228AA

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6840403

BMW F06 F07 LCI F10 LCI Mini F55 F56 F57 Radio Media Player Head Unit 6840403

€104.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9231180

BMW F22 F30 F32 Antenna Amplifier AM FM Booster AMP 9231180

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 83A947356J

Audi Q3 F3 LED Rear Door LED Lighting Module Control Unit Left N/S 83A947356J

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8573257-1

BMW F20 F30 F32 120d 320d 420d Diesel N47N 184HP ECU Kit DDE 8573257 Automatic

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. BK3T-11000-CB

Starter Ford Transit MK8 Custom V363 2,2 Tdci Starter Motor BK3T-11000-CB

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2135406631

Mercedes W213 Rear Door Wiring Harness Cable Left N/S A2135406631

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4M0010006J

Audi Q7 4M Fuse Box Battery Terminal Cover Housing 4M0010006J

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5QC971566

VW Volkswagen Golf Cd1 Passat 3G AC Control Wiring Loom Harness 5QC971566

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 09D927601

Porsche Cayenne S 92a Automatic Gearbox Oil Pump Control Module ECU 09D927601

€32.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 7C0937517AL

VW Crafter SY Fuse Box Distribution Relay Module Housing Bracket 7C0937517AL

€132.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6960221

Airbag Module BMW E65 E66 Sensor B-pillar Left N/S Control Unit Air Bag 6960221

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7N0937311

Volkswagen Passat B7 Sharan 7N Electrical Fuse Relay Box 7N0937311

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0915418A

Audi A3 S3 8P VW Volkswagen Golf Mk5 HV Battery Jacket Cover Housing 1K0915418A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. J8A2-14D375-AA

Range Rover Velar L560 Centre Console Light Wiring Harness Cable J8A2-14D375-AA

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9265300

BMW 1 2 Series F20 F21 F22 F23 LCi Headlight Switch Control Element Light

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2469002318-2

Mercedes W176 W246 Radio Head Unit Media Player Navigation A2469002318

€327.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. CV6T-14B532-DA

Ford Kuga C520 Rear Door Module Control Unit Left Right N/O/S CV6T-14B532-DA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. F1ET14B321CC

Ford Focus Mk3 Air Module ECU Control Unit Controller Sensor F1ET-14B321-CC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2Q0915343C-1

Volkswagen Polo Mk6 AW Battery Tray Power Distribution Unit 2Q0915343C

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6916565

BMW 5 X5 Series E38 E39 E53 Hands-free Electronics Charging Module MOTOROLA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T0971035BA

Audi A5 8T Coupe Front Driver Side Door Wiring Harness Right O/S 8T0971035BA

€75.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5G4971693K

Volkswagen Golf Mk7 5G Rear Door Wiring Harness Cable Loom Left N/S 5G4971693K

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8K0907551-2

Audi S4 B8 3.0 TFSI 333HP CAKA Quattro Engine Unit ECU Kit 8K0907551 Automatic

€303.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8632554

Fuse Box Cover BMW X3 G01 X4 G02 Trim Panel Lid Housing Bracket 8632554

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. KK62-14687-JD

Range Rover Sport L494 Rear Door Wiring Loom Harness Left N/S KK62-14687-JD

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8383551

Mini R50 R53 Headlight Aim Range Control Unit Module ECU Xenon 8383551

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DPLA-14C725-CA

Range Rover L405 Front Rear Seat Memory Heating Module DPLA-14C725-CA

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7557809-10

BMW E87 E90 N45 116i 316i Petrol ECU Kit DME 7557809 + CAS 3 + Key Manual

€151.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1543906

BMW G30 G31 X3 G01 X4 G02 G11 G32 Control Unit SAS Module ECU 1543906

€99.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9847111

BMW G30 SME BK2 Body Control Module Unit ECU 9847111

€189.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03L906023KQ

Audi A1 8X 1.6 TDI 105HP CAYC Engine Control ECU Kit BCM Key 03L906023KQ Manual

€132.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3AF945094J-2

VW Passat B7 Estate Rear Boot Lid Wiring Inner Light Lamp Right O/S 3AF945094J

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. CB250-FUSE

Honda CB250 CB 250RS Fuse Box Electrical Unit Cable Wiring

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 99161121200

Porsche 718 Boxster 982 Cayman 981 Battery Bracket Holder Mount 99161121200

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A167A6

BMW G20 DAB Receiver Audio Module RP Sound System Amplifier Module 5A167A6

€189.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2465400308

Alternator Cable Mercedes W176 W246 OM651 Battery Prefuse Box A2465400308

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0907686B

Volkswagen Golf R 5G Blind Spot Control Module Unit ECU 5Q0907686B

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A4535402703

Smart ForTwo C453 Battery Negative Minus Wiring Cable A4535402703

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2518201964-2

Mercedes W251 Tail Light Lamp Side Panel Harness Loom Rear Left N/S A2518201964

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. LK72-14E168-BA

Land Rover Discovery L550 Front Seat Memory Wiring Link Cable LK72-14E168-BA

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6Q0959433H

Volkswagen Polo Mk4 9N Central Locking Comfort Control Unit Module 6Q0959433H

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P0907801G

VW Volkswagen Touareg 7P Electric Handbrake Control Module Unit 7P0907801G

€127.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A42CC4

BMW F40 F44 Alpine CD Sat Nav Head Unit High 3 5A42CC4

€332.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 079911021D

Audi Q7 4L Engine Starter Motor Actuator Starter 079911021D

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 02Z911024

Volkswagen Golf Mk7 Jetta A6 Scirocco Mk3 Starter Motor 02Z911024

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. E83-SCREEN

BMW X3 E83 Head Unit GPS Navigation Display Screen Android Auto CarPlay 9"

€284.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0035842A

Skoda Octavia MK3 5E Radio Player Sat Nav Multimedia Head Unit 5Q0035842A

€203.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6781462

BMW E60 E61 Active Steering Dynamic Drive Control Unit ECU 6781462

€275.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. HJ32-14K042-BB

Range Rover Evoque L538 Centre Console Wiring Loom Harness Cable HJ32-14K042-BB

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. KK62-14B518-JD

Range Rover Sport L494 Rear Door Wiring Loom Harness Right O/S KK62-14B518-JD

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. HPLA-14D618-BD

Range Rover L405 Door Control Unit Module Front Driver's Side HPLA-14D618-BD

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8H0035225L

Audi A4 B7 Cabrio Aerial Antenna Amplifier Module Unit Right O/S 8H0035225L

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. M8A2-12B684-VAC

Range Rover Velar L560 2.0D AJ20D4 204HP Engine ECU M8A2-12B684-VAC Automatic

€237.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. CK4T-19G490-AB

Ford Transit Mk8 Rear View Parking Camera Backup Camera CK4T-19G490-AB

€132.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1J0941365B

Audi A3 8l TT TTS 8N Fusebox Fuse Relay Box Cover Lid Top End Cap 1J0941365B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2522564

Ford Transit Mk8 Starter Positive Plus Wiring Loom Harness KK3T-14A120-BD

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. BK2T-18C815-FJ

Ford Transit Custom Radio Head Unit Stereo CD Player Screen BK2T-18C815-FJ

€104.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 038907281C

Skoda Fabia Mk1 6Y Glow Plug Relay Unit Black Diesel Engine 038907281C

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3C0907521

Heater Resistor Volkswagen VW Touran 1T Blower Motor Fan Resistor 3C0907521

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A63FF6

Mini F65 F66 F67 Central Bass Speaker Woofer ALEV 3 Right O/S 5A63FF6

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7N0959792J

VW Volkswagen Sharan 7N Passenger's Side Door ECU Module Control Unit 7N0959792F

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8781328

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 8781328

€85.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1Z0907115A

Skoda Octavia RS VRS 1Z II 2.0 TFSI BWA 200HP Engine Unit ECU 1Z0907115A Manual

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2075452540

Mercedes-Benz E W207 Cabrio A207 Auxilliary Battery Bracket A2075452540

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1790385

Ford S-Max Alternator Generator Unit 2.2 TDCi Diesel Engine 6G9N-10300-ADB

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3C8035730B

Skoda Octavia Super Mk2 VW Eos Golf Mk7 Bluetooth Control Module ECU 3C8035730B

€104.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1825318-2

Ford Focus Mk3 Rear Tail Light Lamp Wiring Loom Harness Right O/S BM51-13404-AK

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9282424

BMW 3 5 Series F10 F30 Control Unit Module Top Rear Side View Camera 9282424

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1871861

Ford Focus Mk3 Fiesta Mk7 Alternator Generator Valeo 120A AVN-10300-HA

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T2T-14B192-AB

Ford Mustang GT Mk6 Main Power Relay 4 Pins 8T2T-14B192-AB

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1649007000-1

Mercedes V251 SAM Body Control Module Rear Unit A1649007000

€474.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0008208305

Mercedes C118 Seat Inflation Occupancy Sensor A0008208305

€104.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. JU5T-17D547

Ford Ranger Mk3 Windscreen Rain Sensor Module Control Unit JU5T-17D547

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. GX63-15C859-DM

Land Rover Discovery Sport L550 PDC Parking Module Control Unit GX63-15C859-DM

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9274023

BMW F20 F21 F30 F31 REM Rear Electronic Module Fuse Box Control Unit V3 9274023

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8519005-1

BMW X1 E84 18dX Diesel N47N Engine Control Unit ECU Kit DDE 8519005 CAS3 Key

€85.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. IB80A3AL

Audi A3 8P 8" Xtrons Screen Android 10 CarPlay 4+64GB Head Unit IB80A3AL

€284.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P5035225M

Porsche Cayenne 92A Antenna Aerial Amplifier Module Control Unit 7P5035225M

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8J0945095C-1

Audi TT 8J Rear Tail Lamp Light Wiring Harness Cable Plug Left N/S 8J0945095C

€108.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 99661011100

Porsche 911 986 996 Fuse Relay Box Mounting Block 9603 Petrol 99661011100

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1Q0919283

Volkswagen EOS Park Aid Sensors PDC Control Module Unit ECU 1Q0919283

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1480790

Fuse Relay Mini Cooper One R50 R53 Electrical Box Housing With Cover 148079

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1393415

BMW 3 5 7 Series E36 E38 E90 E91 F10 F11 Change-Over Contact Relay Grey 1393415

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P0937548H

Porsche Cayenne 92A Battery Distribution Fuse Box Relay Module 7P0937548H

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8H0035225J

Audi A4 B7 Cabrio Aerial Antenna Amplifier Module Unit Left N/S 8H0035225J

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. MX73-11001-AC

Land Range Rover Velar L560 Starter Motor 12V 2.0 Diesel AJ20D4 MX73-11001-AC

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2469002603-1

Mercedes W176 W246 W166 Windscreen Windshield Rain Sensor Unit A2469002603

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. KV6T-14B060-AAF

Ford Transit Connect Battery Cable Engine Wiring Harness Loom KV6T-14B060-AAF

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6841603-2

Mini F55 F56 Radio Mini Basis CD Player Head Unit Alpine 6818045 TB00004A

€123.95

Free delivery: Sep 14 – 15

If paid before 14:00

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