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 F01 F02 LCI F06 F10 F11 F13 ECU ICM Control Unit Module Airbag 6866986

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2054402834

Mercedes W205 Parking Sensor Wiring Rear Bumper PDC Loom Cable A2054402834

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6519007500-4

Mercedes W204 C250 CDI BlueEFFICIENCY OM651.911 Engine ECU A6519007500 Automatic

€108.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8C11-3C190-AB

Ford Transit Yaw Sensor ESP Rotation Rate Control Unit Module 8C11-3C190-AB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5A02F94

PDC Module BMW F45 X3 F25 Mini F55 F56 F60 Parking Distance Sensor Unit 5A02F94

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1776204201

Mercedes C118 W177 W247 Battery Box Trim Housing Cover Support A1776204201

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9283526

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

€161.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4L0907290

Audi Q7 4L Gateway Convenience Module Unit Control ECU 4L0907290

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2044401005

Mercedes-Benz C W204 Rear Left N/O/S Right Door Wiring Loom Harness A2045407609

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9159310

BMW F10 Central Sensor LOW 9159310

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9222855

BMW X5 X6 Series E70 E71 Navigation System Car Computer CIC 9222855

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9474776

KaFAS Camera BMW F10 F20 LCI F30 Mini F55 F56 Control Unit ECU Module 9474776

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0906093G

Audi A4 B9 A5 F5 Petrol Engine Fuel Pump Control Unit Module 8W0906093G

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9267200-1

BMW E92 ECU Body Control Module Junction Box L1 PL2RR JBBFE 9267200

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7800164

BMW F10 F11 N57 N57S Positive Battery Cable Alternator Starter Lead 7800164

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9218379

BMW F20 F22 F30 F35 X3 F25 Steering Wheel Control Unit 9218379

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9145097

BMW 3 5 7 X3 X5 Z4 Series E38 E39 E46 E53 E85 E83 Control Unit EWS III

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8X0959793K

Audi A1 8X Door Module Front Right O/S Driver's Side Control Unit ECU 8X0959793K

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9230944

Control Unit BMW F01 F02 F07 F10 F11 CAS4 Key Reading Module 9230944

€79.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6931507

BMW E60 E61 E63 E87 E90 E91 F10 Diagnosis Interface Most 6931507

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2195404505

Mercedes C219 Coupe Front Bumper Parking Sensor PDC Wiring Harness A2195404505

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2229000016

Entry Module Mercedes C253 W205 W213 C238 Keyless Go Control Unit A2229000016

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2118705390

Mercedes ML W164 SLK R171 W211 C219 CD Changer 6 Disc Player Unit A2118705390

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V0971228

Audi RS3 8V 2.5 TFSI Quattro Starter Motor Battery Cable Wiring 8V0971228

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0907160E

Audi A6 C7 A7 4G A8 D4 Exhaust Heating Control Unit Module 4H0907160E

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9119355

BMW E60 E61 E63 E81 E87 E90 E91 DAB Radio Tuner Module 9119355

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G8959792G

Audi A6 C7 Front Left N/S Door Lock Control Module Unit ECU 4F0959792T

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3Q0907530AG

Audi Q2 Q3 F3 1.5 TFSI Gateway Control Unit Module ECU 3Q0907530AG

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0959663

Audi A4 B8 A5 8T Voltage Stabilizer Converter Control Unit Module 8K0959663

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5M5T-14B192-CA-1

Ford Transit Custom Relay 4-Pin Black 12V 40A FOMOCO Set Pair 5M5T14B192CA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 259156244R

Smart A453 Display Screen Multifunction Navigation Dashboard 259156244R

€151.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6928461

BMW E46 E60 E61 E63 E81 E87 E90 E91 X3 E83 X5 E53 E70 Bluetooth Antenna 6928461

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8622032

BMW F20 F21 F30 F31 LCI Control Unit Box Cover Mudguard Flap Cap 8622032

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6928363

BMW E60 E61 Rear Bumper PDC Parking Sensor Wiring Loom 6928363

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2229003210

Mercedes W205 Head Unit Audio Player Radio Sat Nav Module A2229003210

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06L971627A

Audi S1 8X S3 8V VW Golf R Mk7 2.0 TFSI Fuel Injectors Wiring Harness 06L971627A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4M0907247

Audi A4 B9 A5 F5 Keyless Entry Amplifier Control Box Module Antenna 4M0907247

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6948182

BMW E60 E61 LCI Alarm System Unit Ultra Sonic Module

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1388277

BMW E39 E46 E60 E61 E83 E90 E91 Switch Glove Box Light

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6964141

BMW 7 Series E65 E66 E67 Control Unit Module Door Front Driver Side 6964141

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1179001801

Mercedes W176 Air Module System Control Unit Module ECU A1179001801

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V0857273P

Audi A3 8V Multimedia Display Screen Radio Sat Nav Head Unit 8V0857273P

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8U0907468AC

Audi A1 8X Q3 8U Central Gateway Control Unit Module Relay ECU 8U0907468AC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V0035465C

Audi A3 8V Bang & Olufsen Audio Sound Amplifier Stereo System Module 8V0035465C

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0907063CD

Audi A8L 4H Onboard Comfort Control Module CCM Unit ECU 4H0907063CD

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1679004712

Bluetooth Module Mercedes W205 W213 W222 W238 Control Unit ECU A1679004712

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9118064

BMW 7 Series E65 E66 Centre Console Vent Storage Compartment Support 9118064

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0881073B

Audi A8L 4H Front Seat Air Pump Control Module Unit 4H0881073B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2057200522

Mercedes GLC X253 Front Door Trim Cover Panel Strip Left N/S Black A2057200522

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4E0910217C

Audi Q7 4L Front Camera FAS Lane Assistance Control Unit 4E0910217D

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9118037

BMW E46 Convertible Alarm Sensor MDD Module Burglar Alarm Radar 9118037

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BJ32-14F041-AG

Land Rover Evoque L538 Junction Fuse Box Control Module BJ32-14F041-AG

€99.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6989309

BMW 1 3 X1 Series E84 E90 E91 E92 Diesel N47 Air Condition Con Suction Hose Pipe

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2229003308

Mercedes W222 W205 S205 Keyless Entry Control Module ECU A2229003308

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8570846

BMW F20 F21 F22 F30 F32 LCI B47 Diesel Starter Motor Engine 8570846

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9270356

Fuse Box BMW F40 Mini F55 F56 Power Distribution Junction Relay Unit 9270356

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0959795E

Audi A8 4H Rear Door Module Control Unit Left Right N/O/S 4H0959795E

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2079003700

Mercedes C207 Door Module Rear Left N/S Control Unit ECU A2079003700

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8E0035111D

Audi TT 8J Radio Head Unit Navi CD DVD Player Changer 8E0035111D

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A9069006503

Door Module Mercedes W906 Front Left Right N/O/S Control Unit ECU A9069006503

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8577764-1

BMW F10 F11 520d Diesel N47N 184HP ECU Kit DDE 8577764 + Key + CAS4 Automatic

€379.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2469008510

Body Control Module Mercedes W117 W176 W242 W246 Fuse Box Sam A2469008510

€33.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9T1T-14B321-BE

Ford Transit Connect ECU Control Unit Impact Sensor Module Airbag 9T1T-14B321-BE

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8H0035411D

Audi A3 8P Door Card Speaker Rear Left Right N/O/S Audio Speaker 8H0035411

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009009213

Mercedes W447 Fuel Pump Control Module A0009009213

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. RVH000055-1

Land Rover Discovery 3 L319 Rear Air Suspension Relief Valve Block RVH000055

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7797661

Alternator BMW X3 E53 X5 E83 M57N2 Generator Diesel Power 150A 7797661

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2649060400

Mercedes W205 W257 Starter Engine Motor A2649060400

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6826326

BMW F40 G05 G20 G30 Shark Roof Fin Antenna Aerial Module Unit 6826326

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q4959592K

Seat Ateca Door Module Control Unit Front Passenger's Side Door 5Q4959592K

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8617239

Gearbox Module Mini R55 R56 LCI R60 Automatic Transmission Unit EGS 8617239

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6R0971537N

Seat Ibiza 6J Battery Ground Line Earth Negative Cable Wiring 6R0971537N

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9229873

BMW 1 Series E81 Body Control Module ECU L2 PL2RR JBBFE III Junction Box 9229873

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9142092

Bluetooth Antenna BMW X1 X3 Z4 E84 E89 F01 F02 F03 F25 Amplifier AMP 9142092

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7510921

Mini R52 Cabrio Petrol W10 Engine Wiring Loom Harness Module 7510921

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009820912

Mercedes W176 W222 W246 Voltage Converter Power Distributor Fuse A0009820912

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7160897

BMW X5 E53 E60 E61 E65 E81 E87 E90 E91 Turn Indicator Silver Bulb 7160897

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2129004206

Door Module Mercedes W212 E-Class Rear Right O/S Control Unit A2129004206

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06K907425B-3

Volkswagen Golf Mk7 2.0 TSI CHHB 220HP Engine ECU Kit 06K907425B Manual

€284.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7631932

Engine Wiring BMW F30 F31 N20 Loom Module Harness Cable 7631932

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9255048

BMW 1 Series E81 E87 E87N Battery Wire Cable Negative Earth Lead 9255048 6929705

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9126106

BMW Mini R55 R56 R57 Cabrio Adapter Lead Outside Temperature Sensor 9126106

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2118705026

Passenger Seat Module Mercedes W164 W203 W211 Memory Control Unit A2118705026

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6989994

BMW E65 E66 E67 Control Unit Front Centre Console Module 6989994

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GK2T-6M091-AB

Ford Transit Mk8 2.0 Ecoblue Diesel Glow Plug Wiring Loom GK2T-6M091-AB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8514766

BMW 1 Series F20 114d 116d ed N47N Wiring Harness Engine Glow Module 8514766

€170.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7545142

BMW Z4 Series E85 N52 Roadster Cable Alternator Starter Base B+ 7545142

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2049060205

Mercedes W204 Rear SAM Module Fuse Box Relay Control Unit A2049060205

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4539018900

Smart ForTwo C453 Air Module Impact SRS Control Module ECU A4539018900

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7CP1-18C847-CA

Ford Focus Mk3 Aerial Antenna Amplifier Control Unit Module 7CP1-18C847-CA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3Q0907530AR

VW Volkswagen Transporter T6 Gateway Control Unit Module ECU 3Q0907530AR

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0994644206

Mercedes X253 Steering Wheel Contact Switch Control Plate A0994644206

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9199305

KaFAS Camera BMW F10 F11 Rear View Control Unit Module 9199305

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2115457301

Mercedes C219 Front Fuse Box SAM Relay Control Module A2115457301

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9861558-1

Rain Sensor BMW F20 F21 F30 F31 Windscreen Light Solar Condensation Unit 9861558

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2469003417

Parking Brake Module Mercedes W176 W231 W246 Electric Control Unit A2469003417

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 80A907355G

Audi Q5 FY AdBlue Control Module ECU Unit 2.0 Diesel 80A907355G

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6429002700

Mercedes W203 W204 W212 OM642 Glow Plug Relay Unit Control Module A6429002700

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2049001206

Mercedes W204 Coupe Door Module Front Left N/S Control Unit A2049001206

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

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