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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BMW F10 F11 528i N53 258HP Engine Control Unit ECU DME 7614366 Automatic

€854.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AH42-19G255-AA

Land Rover Range Rover L322 Aerial Antenna Amplifier Module AH42-19G255-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2045408735

Mercedes W204 Front Seat Air Module Wiring Cable Front Right A2045408735

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K5971693BA

Audi A6 C8 Door Wiring Harness Cable Loom Rear Left Right N/O/S 4K5971693BA

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G8971036K

Audi A7 4G8 Front Door Harness Wiring Loom Cable Passenger Side 4G8971036K

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3457416

Mini Cooper R58 Fuse Distribution Box Control Unit High PL3 SPEG H8 3457416

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4155404305

Microphone Cable Mercedes Citan W415 Wiring Loom Cable Harness 27083202

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G2907311C-1

Audi A7 4G8 3.0 TDI CRTE 218HP Quattro Engine ECU Kit 4G2907311C BCM2 + 2 Keys

€664.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 83F971104F

Audi Q3 F3 Rear Bumper PDC Wiring Loom Cabling Parking Sensor 83F971104F

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2383676

Battery Cable BMW F22 Negative Earth Cable Minus Electrical Wire 7625999

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9873244

Mini F57 F60 Air Module Control Unit Sensor ECU 9873244

€237.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. H1BT-19949-AD

Ford Fiesta ST MK8 Heater Flap Control Wiring Cable WIre Loom H1BT-19949-AD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. C1BT-14D559-AAC

Ford Fiesta Mk7 Boot Lid Tailgate Keyless Entry Wiring Loom C1BT-14D559-AAC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9380203

BMW G30 G31 G32 G11 G12 Cable Wiring Harness Holder Guide Mount 9380203

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7836126

BMW 5 6 E60 E61N M5 E63 E64 M6 Outlet Camshaft Exhaust Cylinders 6-10 126/A2

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1775405101

Door Wiring Mercedes V177 Rear Door Right Left N/O/S Harness Wire A1775405101

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DK62-14A578-DD

Range Rover L405 Rear Seat Wiring Loom Harness Cable Right O/S DK62-14A578-DD

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9228495

BMW F07 GT ECU Body Control Module Junction Box V12 PL2 JBBFE III 9228495

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR076282

Land Rover Discovery Sport L550 Front Bumper PDC Wiring Loom FK72-14369-GC

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. EM5T-14D212-ED

Ford Ranger Mk6 Bluetooth Multimedia Control Module Unit ECU EM5T-14D212-ED

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1669009311

SAM Module Mercedes ML W166 Center Electrics Control Modul A1669009311

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9805461

Mini Countryman R60 Front Door Wiring Loom Harness Cable Right O/S 9805461

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. B67875835

Mercedes W203 C219 Nokia 6100 6610 6610I 7250I Mobile Phone Charger AB67875835

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8621490

Alternator Cable BMW F21 F22 F30 LCI 125i 220i 228i 320i N20 Starter 8621490

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BK2T-14401-FHE

Ford Transit Connect Fuse Relay Box Panel 1.5 EcoBlue Diesel BK2T-14401-FHE

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7E0959655D

VW Volkswagen Transporter T6 Air Module Control Unit ECU 7E0959655D

€104.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L906021P-1

Volkswagen Crafter 2E 35 2.0 TDI CSLA 109HP Engine ECU Kit 03L906021P Manual

€569.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9185542-1

BMW X5 E70 Radio Navigation CCC Professional CD Player Head Unit 9185542

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P5959107E

Porsche Macan 95B Rear Tailgate Control Module Unit 7P5959107E

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8S0035021E

Audi TT FV Mk3 Navi SD GPS MMI Multimedia Head Unit Module 8S0035021E

€664.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A9076830400

Mercedes W907 Fuse Box Relay Cover Lid Control Unit Bracket Trim A9076830400

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BK2T14B144BA

Ford Transit Custom MK8 2.2 TDCI Fuse Relay Box Unit Module BK2T14B144BA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DH52-14B296-AB

Land Rover FREELANDER 2 L359 Electronic Module DH52-14B296-AB

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 284B14011R

Smart 453 Fortwo Body Control Module SAM Control Unit 284B14011R

€104.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AH42-18B008-AG

Range Rover L322 Air Suspension Control Unit Module CVD AH42-18B008-AG

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K0035502A

Audi A6 C8 A7 4K Centre Console Wireless Charging Station 4K0035502A

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q4959592F

VW Crafter Sy Skoda Octavia 5E Door Control Unit Front Passenger Side 5Q4959592F

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1725400433

Electric Wire Mercedes SLK R172 M271 Alternator Prefuse Box Wiring A1725400433

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1664400137

Mercedes W166 AdBlue Tank Reservoir Wiring Harness Loom Cable Wire A1664400137

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8585384-1

BMW X4 F26 X5 F15 N57 Diesel Engine Control ECU Kit Set 8585384 Automatic

€393.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9221953

BMW X5 E70 Interior Inner Wiring Loom Harness Cable 9221953

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0962239

Audi A5 S5 F5 Boot Trunk Lid Tailgate Opening Sensor Line Harness Wire 8W0962239

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9151864-1

HiFi Speaker BMW X5 E70 X6 E71 X3 E83 Top HiFi Sound Unit Door Card 6949734

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4E0035652E

Audi A6 C6 MMI Multimedia Sat Nav Navigation Control Head Unit 4E0035652E

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. L8B2-14F012-BA

Range Rover Velar L560 Tyre Pressure Sensor Control Module L8B2-14F012-BA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4030026

BMW Z4 E85 Xenon Headlight Resistor Ballast Relay Module Unit 4030026

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1725408705

Mercedes R172 Electrical Wiring Harness Cable Window Regulator A1725408705

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3WA959393A

Volkswagen Crafter Mk2 SY Door Control Unit Module Driver Side 3WA959393A

€70.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 81A971035AP

Audi Q2 GA Front Door Wiring Harness Loom Cable Driver Side 81A971035AP

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. REAV6N-11000-GE

Ford Focus Starter Motor 1.5 Diesel Start/Stop REAV6N-11000-GE

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9G9T-14240-HBA

Ford Mondeo Mk4 Rear Door Wiring Loom Harness Cable Right O/S 9G9T-14240-HBA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2198203761-1

Headlamp Mercedes W219 Headlight Xenon Light Front Left N/S Harness A2198203761

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8091664

Baterry Cable Bracket BMW X3M F97 X4M F98 S58 Alternator Wire Holder 8091664

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1668200400

Mercedes GLE W166 C292 Front Seat Occupancy Sensor Wire Harness A1668200400

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2198947-1

Ford Fiesta Mk8 Engine Alternator Generator 1.5 EcoBoost 150A JX6T-10300-FA

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9171900

BMW X5 E70 X6 E71 Computer Control Unit DVD Player RSE MID PLUS PL4 9171900

€360.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2749003900

Mercedes Vito W447 Electronic Control Unit Module ECU A2749003900

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G5945093A-2

Audi A6 C7 Rear Tail Light Lamp LED Wiring Cable Inner Left N/S 4G5945093A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR157219

Range Rover Sport L494 Glow Plug Wiring Loom 3.0D MHEV LR157219

€99.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1775409141

Mercedes W177 W243 W247 Front Door Wiring Harness Cable Driver Side A1775409141

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0295453026

Mercedes W204 Air Module Wiring Harness Cable Loom A0295453026

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8E0907637A

Audi A6 C5 Yaw Sensor ESP Rotation Rate Control Unit Module 8E0907637A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DS7T-15603-CA

Volkswagen Amarok Mk2 Keyless Entry Antenna Amplifier Module ECU DS7T-15603-CA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9134646

Seat Module BMW E65 E66 Front Seat Control Unit Module ECU 9134646

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8631656

BMW F20 F21 F30 LCI M140i 340i Wiring Harness Motor Sensor System Module 8631656

€156.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8483816

BMW X3 G01 X4 G02 Cable Alternator Starter Base B Wire Line 8483816

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6860182

BMW F30 F31 F34 Acc Sensor Distronic Radar Module Unit 66316860182

€393.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8J0907274

Audi TT 8J Tyre Pressure Control Module Unit 8J0907274

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FW93-14F012-BE

Land Rover Discovery Sport L550 Tyre Pressure Control Unit TPMS FW93-14F012-BE

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AH42-14N030-AE

Land Rover Range Rover L322 Rear Fuse Relay Box AH42-14N030-AE

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5A70A69

BMW F40 Parking Module Comfort Control Unit ECU 5A70A69

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9318368

BMW X3 F25 F06 F06N F07 F07N F10 F10N F11 CAS4 Comfort Control Module 9318368

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009006907

Mercedes W205 Tire Pressure Control Module A0009006907

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8362064

BMW E39 X5 E53 Z4 E85 Drive For Window Lifter Motor Right O/S 8362064

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 81A971687N

Audi Q2 GA Door Wiring Loom Harness Cable Rear Right Left N/O/S 81A971687N

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BT4T-14F014-AE

Ford Mondeo Mk5 USB SD Card Module Input Port Media Gateway BT4T-14F014-AE

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0941828

Audi A4 B9 A5 F5 Fuse Box Battery Terminal Housing 3.0 TDI 8W0941828

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009050038

Mercedes W212 Multi-Purpose Windscreen Camera Control Unit Module A0009050038

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8387568-1

BMW E65 Battery B Engine Compartment Terminal Point Cover 8387568

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055409229

Mercedes C205 Rear Shock Absorber Wiring Harness Cable Left N/S A2055409229

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GK3T-14A120-AC

Ford Transit Positive Battery Lead Harness Wiring Cable Loom GK3T-14A120-AC

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DB39-14A073-DC

Ford Ranger Mk6 Comfort Control Unit BCM 3.2 DB39-14A073-DC

€398.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8730190

BMW G30 G31 Rear Door Wiring Loom Harness Cable Right O/S 8730190

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4148200526

Mercedes Vaneo W414 Front Left Right Door N/O/S Control Unit Module A4148200526

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7G9T-14B534-BE

Ford Mondeo Mk4 Door Window Control Module Rear Left Right N/O/S 7G9T-14B534-BE

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2218708992

Mercedes W221 C216 Telephone Bluetooth Connection Control Module A2218708992

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6C1T-14A076-AD

Ford Transit Mk7 Fuse Box Housing Lid Cover Trim 6C1T-14A076-AD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L907309L-1

Volkswagen Transporter T6 2.0 TDI CAAB 102HP Engine ECU Kit 03L907309L Manual

€203.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BK3T-19L540-DE

Ford Transit Mk8 Rear Sliding Door Wiring Loom Harness Cable BK3T-19L540-DE

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8576341-4

BMW F20 F21 F30 F31 118d 318d 143HP N47N ECU Kit DDE 8576341 + Key + FEM

€284.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0959795B

VW Touareg 7L Rear Door Control Unit Module Left Right N/O/S ECU 4H0959795B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8514291

Battery Cable BMW X3 F25 X4 F26 B47 Alternator Starter Base B Cable 8514291

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5WA959354

VW Volkswagen Golf Mk8 Air Module Control Unit Crash Impact Sensor 5WA959354

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7644747

BMW F10 F11 F30 Petrol N20 ECU DME Engine Control Unit Module 7644747 Manual

€398.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. NU5T-14B531-JA

VW Amarok Mk2 Door Module Control Unit Front Rear Driver's Side NU5T-14B531-JA

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9364817

BMW X1 E84 ECU Body Comfort Control Module Junction Box PL2RR JBBFE IIIR 9364817

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K0906121C

Fuel Pump Control Audi A4 B9 A5 F5 A6 C8 Pump Unit Module ECU 4K0906121C

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3V9971104A

Skoda Superb Mk3 3V Rear Bumper Wiring Harness Cable 3V9971104A

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4M0907508

Audi A6 C8 Acceleration Crash Impact Sensor Control Unit 4M0907508

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

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