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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Ford Transit Mk7 Glow Plug Ignition Wiring Loom 2.4 TDCI Diesel BK2Q-6M091-BA

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2150085

Ford Transit Custom Positive Battery Wiring Cable Harness Loom GK2T-14A099-BDB

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DPLA-70718-NV

Land Rover Range Rover Evoque L538 Telematics Control Module ECU DPLA-70718-NV

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2649000700-6

Mercedes W177 A250 264960 264.960 224HP Engine ECU Module A2649000700 Automatic

€237.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1175401605

Mercedes C117 Door Wiring Harness Control Module Front Left N/S A1175401605

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. L8B2-70718-AX

Land Rover Range Rover Velar L560 Telematics Control Unit Module L8B2-70718-AX

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2044401705

Mercedes S204 Door Wiring Loom Cable Rear Left Right N/O/S A2044401705

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2749062100

Starter Motor Mercedes W213 C238 C253 Engine A2749062100

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5QF971227D

Audi RSQ3 F3 Battery Cable Plus Pole Positive Wiring Harness Loom 5QF971227D

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059060104-2

Mercedes W205 Front Headlight Headlamp Wiring Harness Cable Left N/S A2059060104

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8630125-5

BMW F21 Engine Control ECU Manual 1.6 Petrol 170 HP 118i N13 N13B16A 8630125

€427.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GV6T-14A073-DJ

Ford Focus Mk3 Transit Connect Mk2 Body Control Module BCM GV6T-14A073-DJ

€99.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DT1T-15K866-BD

Ford Transit Connect Mk2 Parking Aid Module Control Unit DT1T-15K866-BD

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1Q0971120AP

VW Eos 1F Front Door Wiring Loom Harness Cable Drivers Side O/S 1Q0971120AP

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 33243N

Ford Transit Custom 2.2 TDCi Diesel Starter Motor WaiGlobal 12V 33243N

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3Q0959435G

VW Volkswagen Tiguan 5N Entry Keyless Kessy Control Module Unit ECU 3Q0959435G

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 918545-102

BMW F11 Wiring Cable Loom 918545-102 767832-113

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2711534591

Mercedes W203 C180 Kompressor M271 Engine Module ECU A2711534591 Automatic

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2188701489

Mercedes W218 Audio Amplifier Harman Kardon Subwoofer Control Unit A2188701489

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4535401509

Smart Forfour Fortwo Fuel Pump Wiring Harness Loom A4535401509

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. RHD-LR145914

Range Rover Velar L560 Front Seat Wiring Loom Harness Right O/S M8A2-14B719-FNB

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H4907357G

Audi TT 8S Headlight Head Light Lamp Range Control Unit Module ECU 4H4907357G

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4E0035225BQ

Audi A8 D3 Aerial Amplifier Antenna Receiver Signal Booster Unit 4E0035225BQ

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CC1T-11000-AB

Ford Transit Engine Starter Motor Actuator Starter CC1T14000AB

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8E2971235A

Audi A4 B7 Seat Exeo 3R Battery Negative Terminal Cable 8E2971235A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 51888255

Fiat Doblo Mk1 Stilo 192 Diesel Glow Plug Relay Pre-Heating Control ECU 51299012

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8589891

Starter Motor BMW G20 G21 G30 G31 G32 GT G11 B57 3.0 Diesel Engine 8589891

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BJ32-14A481-BA

Land Rover Discovery Sport L550 2.0 Diesel Fuse Box BJ32-14A481-BA

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7555166

BMW F01 F02 F03 F04 ECU Bracket Engine Module Box Housing Holder Mount 7555166

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4M0965429BC

Audi A6 C8 Thermo Management Control Unit 4M0965429

€222.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V4971687L

Audi A3 RS3 8V 5Dr Door Harness Loom Wiring Rear Left Right N/O/S 8V4971687L

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L906018AC

Audi A4 B8 A5 8T 2.0 TDI CJCA 143HP Engine Control Module ECU 03L906018AC Manual

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8517862-14

BMW F20 F30 F32 120d 320d 420d Diesel N47N 184HP ECU Kit DDE 8517862 + Key + FEM

€270.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. YQS500170

Range Rover L322 Fuse Box Cover Lid Panel YQS500170

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. EJ32-19G307-BB

Range Rover Evoque L538 Telematics Module Bracket Support Mount EJ32-19G307-BB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009008709

Mercedes W213 Tyre Pressure Control Module Unit A0009008709

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7N0971104E

Seat Alhambra 7N Rear Bumper PDC Parking Sensor Wiring Loom 7N0971104E

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1669005612

Door Module Mercedes ML W166 Rear Right O/S Door Control Unit A1669005612

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5M51-14C288-AA

Ford Mondeo Mk4 Front Seat Occupancy Mat Sensor Unit Wiring Cable 5M51-14C288-A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2E0971237G

Volkswagen Crafter 35 Sprinter Negative Battery Wiring Cable Lead 2E0971237G

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6R0915441

Seat Ibiza 6j Fuse Box Cover End Cap Lid Top Covering Panel 6R0915441

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V0035504A

Volkswagen Golf R Mk7 Toll Pay Module Road Toll Sender Receiver Unit 8V0035504A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. RHD-LR146074

Range Rover Velar L560 Front Seat Wiring Loom Harness Left N/S M8A2-14A699-FHB

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8X0971365

Audi A1 8X Driver's Seat Cable Seat Belt Warning Wiring Loom Harness 8X0971365

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8576341-1

BMW F20 F30 F31 116d 316d 116HP N47N Engine ECU Control Unit DDE 8576341 Manual

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8631634

BMW X5 F15 Earth Ground Cable Negative Battery Lead Wiring 8631634

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 95B971693F

Porsche Macan 95B-2 Rear Door Card Wiring Harness Left Right N/O/S 95B971693F

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3D0919283C

Volkswagen VW Phaeton 3D PDC Parking Sensor Control Unit Module 3D0919283C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6461505091-2

Mercedes W203 C220 CDI 150HP 646.963 Engine Control ECU Kit A6461505091 Automat

€208.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8578945-4

BMW F20 F21 F30 116d 316d N47N 116HP ECU Engine Contol Unit DDE 8578945 Manual

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C0909141

Audi S1 8X Skoda Octavia Mk3 Keyless Entry Antenna Control Module 3C0909141

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9364818

BMW Z4 E89 ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9364818

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BV61-12A650-NN

Ford Focus Mk3 1.6 TDCI T1DB 115HP Engine Control ECU BV61-12A650-NN Manual

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8R0907468A

Audi A4 B8 Quattro A5 8T Gateway Control Unit Module 8R0907468A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CPLA-14F681-AJ

Land Rover Range Rover L405 Gateway Module Control Unit ECU CPLA-14F681-AJ

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2218707385

Mercedes W221 Rear DVD Entertainment System Video Player Unit A2218707385

€370.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2K5971691

VW Volkswagen Caddy 2K Sliding Door Wiring Loom Harness Cable Left N/S 2K5971691

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9232063

BMW F30 Control Module Sensor 9232063

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8F0971035F

Audi S5 A5 8F Front Door Trim Wiring Harness Cable Loom Left N/S 8F0971035F

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2761509875

Mercedes W213 W222 A238 M276 Starter Screening Plate Shield A2761509875

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03G906018FC-3

Volkswagen Golf Mk5 2.0 TDI BMN 170HP Engine Control ECU Kit 03G906018FC Manual

€156.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2049060405

Mercedes W204 Front Fuse Board Box Relay Unit Case A2049060405

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P5035481D

Porsche Cayenne 92A Subwoofer Bass Low Tone Speaker Bose 7P5035481D

€99.95

Free delivery: Aug 7 – 11

If paid before 14:00

Part no. EJ32-14F70-AA

Range Rover Evoque L538 Start Stop Power Supply Control Module EJ32-14F70-AA

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0907530AK

Skoda Octavia MK3 Central Gateway Control Module ECU 5Q0907530AK

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8737097-1

BMW G30 G31 Tailgate Control Unit Module ECU 8737097

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. JK2T-18D815-CH

Ford Transit Custom Radio Head Unit Multimedia Player JK2T-18D815-CH

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2321615

Ford Fiesta Mk7 Alternator Generator 1.6 Petrol Engine AV11-19D629-AC 2321615

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DPLA-18C858-BC

Range Rover L405 Display Touch Screen Control Module Unit DPLA-18C858-BC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6R0937548C-1

Skoda Fabia 5j Fuse Box Relay Carrier Holder Bracket Mount Tray 6R0915345E

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2711535679

Mercedes S203 Engine Control Unit ECU 1.8 Petrol 163 HP A2711535679 Automatic

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G8971365L

Audi A7 4G Front Seat Belt Warning Wiring Cable Left Right N/O/S 4G8971365L

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059065105-2

Mercedes S205 Estate Rear Lamp Inner Wiring Harness Cable RIght O/S A2059065105

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9283526-1

Mini R55 R56 R57 R60 R61 Navigation Head Unit Sat Nav DAB CHAMP 2 9283526

€180.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A9069001103

Volkswagen Crafter 35 Gateway Control Module Unit ECU A9069001103

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2K7971557

VW Volkswagen Caddy SB Front Door Wiring Loom Harness Right O/S Side 2K7971557

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8Z0951253

Skoda Octavia II 5 Pin Black Relay Control Module Unit Set Kit 8Z0951253

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. J8A2-13E005-AC

Range Rover Velar L560 LED Headlight Ballast Control Unit Module J8A2-13E005-AC

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. MX73-19C164-BA

Range Rover Velar L560 Audio Speaker Amplifier Control Module MX73-19C164-BA

€465.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7838512

BMW 3 Series E90 E92 E93 M3 Battery Alternator Starter Cable Wiring 7838512

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6943285

BMW E65 Xenon Headlight Control Module LM E6X LWR 6943285

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8518802

BMW F30 F31 330dX N57N Engine Gearbox Module Wiring Cable Loom Harness 8518802

€70.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6G9T-14A481-AA

Land Rover Discovery Sport L550 Fuse Box Module Control Unit 50EH199762ST3

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DH52-18C815-BC

Land Rover Freelander 2 L359 Radio Head Unit DAB CD Player DH52-18C815-BC

€123.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 420035225S

Audi R8 42 Spyder Gen 1 Audio Antenna Amplifier Module Unit 420035225

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8704090

BMW F20 F21 F30 Mini F55 F56 HSD Cable HU CID Wiring Cable 8704090

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9206056-TS

BMW F07 GT Rear PDC Parking Distance Sensor Titan Silver - 354

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K0941828F

Audi A6 C8 Q5 Mk2 Battery Flat Fuses Fuse Box Panel 4K0941828F

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2139003920

Mercedes W213 C238 Stereo Radio Player Sat Nav GPS Control Unit A2139003920

€123.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7N0937503

Audi Q3 8U Skoda Yeti VW Caddy Mk2 Tiguan 7L Fuse Relay Box Housing 7N0937503

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9353046

MINI Cooper One F54 F55 F56 F60 Seat Airbag Sensor Control Unit Module 9353046

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FG9T-14F642-CB

Ford Mondeo Mk5 OBD Diagnostic Port Data Port Socket Module FG9T-14F642-CB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L6971693E

Volkswagen Touareg 7L Rear Door Wiring Loom Harness Left Right N/O/S 7L6971693E

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7N0971104B

Volkswagen Sharan 7N Rear Bumper PDC Parking Sensor Wiring Loom Cable 7N0971104B

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7640132-1

Alternator BMW F20 LCI Mini F30 F56 F60 Alternator Generator DENSO 150A

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DPLA-70718-NX

Range Rover Evoque L538 Telematics Control Module ECU DPLA-70718-NX

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. JPLA-10755-BC

Range Rover Sport L494 Battery Box Support Plate Bracket Mount JPLA-10755-BC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. N8B2-19G229-AA

Land Rover Range Rover Velar L560 Anti Theft Alarm Siren Horn N8B2-19G229-AA

€146.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9347914

BMW 5 Series F07 F10 F11 CAS4 Control Unit Key Reading Module 9347914

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

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