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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Mercedes W212 E250CDI Blue Efficiency OM651 204HP Engine ECU A6519007401 Key

€303.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2118705726

Air Module Mercedes W211 C219 Air System Control Unit ECU A2118705726

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P6035552

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Left N/S 7P6035552

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9230404-1

BMW X1 E84 Rear Bumper PDC Cables Wiring Harness Loom 9230404

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9210863

BMW X3 F25 Fuse Box Power Distribution Module Relay Unit 9210863

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9351679-1

BMW F10 F20 F22 F30 Navigation Sat Nav Head Unit High 9351679

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8642705-1

Mini Cooper F56 B38 136HP Engine Control ECU DME Kit 8642705 Automatic

€227.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2195404605

Mercedes C219 Rear Bumper PDC Wiring Parking Sensor Loom Harness A2195404605

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9283429

BMW E90 E91 E92 E93 LCI Radio CD Player Multimedia Head Unit 9283429

€569.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR052994

Land Rover Discovery 4 L319 Rear Parking Sensor Wiring Loom Harness EH2215B484CB

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9079000806

Mercedes Sprinter W907 W910 Front SAM Body Control Module Unit ECU A9079000806

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8602802

BMW i3 I01 Hybrid Rex Engine Wiring Cable Harness Bracket Mount Trim 8602802

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3450085

PDC Control Unit Mini R55 R56 R57 R58 R60 R61 Parking Sensor Module 3450085

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6519004500

Mercedes W205 Engine Control ECU Unit 204HP Diesel Automatic Gearbox A6519004500

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0001502780-1

Mercedes W203 CL203 W204 M272 Petrol Ignition Coil Cable Connector A0001502780

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9257426

Fuse Box Grouping BMW F10 F11 Fuse Placement Map Card Diagram 9257426

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6904620

BMW 7 Series E65 E66 Diversity Antenna Tuner Amplifier Wiring 6904620

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. R8D2-14A614-CA

Range Rover Evoque L551 Steering Gear Wiring Loom Harness Cable R8D2-14A614-CA

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9219646

BMW X5 E70 Front Bumper Park Sensor PDC Wiring Harness Cable Loom 9219636

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9387262

FEM Module BMW F20 F21 F22 F30 F31 F32 F36 Body Control Unit ECU LR01 9387262

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2049002002

Mercedes W204 C207 Air Suspension Dynamic Level Control Unit Module A2049002002

€45.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9339825

BMW G11 G30 G31 Power Supply Module High Voltage Battery Terminal Point 9339825

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0035186P-1

VW Volkswagen Golf Mk5 Passat B6 Radio CD Player Head Multimedia Unit 1K0035186P

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6461509777-2

Mercedes C209 Engine Control ECU 2.1 Diesel 150 HP A6461509777 Automatic KIT

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9288304

FEM Module BMW F20 F21 F22 F30 F31 F32 F36 Control Unit 9288304

€85.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0971035AR

Audi A4 B8 Front Driver's Door Wiring Harness Loom Electrical Cable 8K0971035AR

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9190107

BMW Z4 E89 Battery B+ Engine Compartment Terminal Point 9190107

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 09D927750LJ

Porsche Cayenne 955 Automatic Gearbox Transmission Module 3.0 TDI 09D927750LJ

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 897410D020

Toyota Yaris XP10 Central Door Locking Module Control Unit ECU 897410D020

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5WA959436B

Audi A3 8Y Volkswagen Golf Mk8 Keyless Entry Module Control Unit ECU 5WA959436B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8588448

BMW 1 3 Series F20 F21 F30 LCI Wiring Harness Engine Glow Plug Module 8588448

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 0C8927755C

VW Touareg 7P Automatic Transmission Module Control Unit ECU 3.0 TDI 0C8927755C

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CV1T-14B532-BC

Ford B-Max Door Control Unit Module Rear Left Right N/O/S CV1T-14B532-BC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009006102

Mercedes Vito W639 ECU Control Unit Crash Impact Module Air Module A0009006102

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BV6T-14297-AAG

Ford Focus Mk3 Windscreen Heated Washer Jet Wiring Harness Cable BV6T-14297-AAG

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0025428419

Relay Mercedes W176 W246 4-Pin Black Hella 12V A0025428419

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8200881264

Alternator Support Nissan Qashqai Renault 2.0 dCi Engine Bracket 8200881264

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. AG9N-10723-AC

Land Rover Freelander 2 L359 HV Battery Tray Holder Bracket AG9N-10723-AC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K5945096D-2

Audi A4 B8 Saloon Rear Tail Light Lamp Wiring Harness Cable Right O/S 8K5945096D

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0951253A-1

Seat Skoda Audi VW Polo Multi Use Control Relay 4 Pin 645 4H0951253A SET X2

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5A898F2

BMW F70 F74 F78 Parking Brake Wiring Harness Cable Rear 5A898F2

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8662843-1

Mini Cooper F55 B38 136HP Engine Module ECU DME Kit 8662843 Manual

€664.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5M5T14B192EA

Ford Transit Custom Relay 4-Pin Black 12V 40A FOMOCO 5M5T14B192EA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6994419

BMW G20 Power Distribution Fusebox Cover Fuse Box Terminal 6994419

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8V41-13A602-AD-2

Ford Kuga Mk1 Rear Tail Light Lamp Inner Right O/S Wire Cable 8V41-13A602-AD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P5882771

Porsche Cayenne 92A Front Seat Pump Ventilblock Unit 7P5882771

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P0971349B

Porsche Cayenne 92A Minus Negative Wiring Loom Harness Cable 7P0971349B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8355056

BMW 5 X5 Series E53 Fuel Tank Flap Actuator 8355056

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. N8B2-19L300-PF

Land Rover Defender L663 Sat Nav Multimedia Head Unit N8B2-19L300-PF

€569.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1669003903

Mercedes GLE W166 GLS X166 Air Module Unit Control ECU SRS A1669003903

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4F0953549A

Audi S6 C6 Steering Column Wiper Switch Stalk Cruize Control 4F0953549A

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P6035730J

VW Volkswagen Caddy 2C Scirocco Bluetooth Control Module Unit ECU 7P6035730J

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0971068F

VW Volkswagen Tiguan 5N AD BT Exhaust Flap Wire Harness Loom 5Q0971068F

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129008707-1

Mercedes W212 Display Screen Multifunction Dashboard Control Unit A2129008707

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6803169

Air Con Module BMW F20 F30 F31 Mini F55 F56 Air Conditioning A/C Unit 6803169

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7618677

Battery Lead Cable BMW E81 E84 E87 RR1 RR2 RR3 Negative IBS 7618677

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8V0919129B

Volkswagen Golf Mk7 Audi A3 8V TV Tuner ECU Control Module 8V0919129B

€161.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR012048

Land Rover Range Rover Evoque L538 Battery Hold Down Bracket Mount LR012048

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7PP907064KG-1

Porsche 718 Boxster 982 Body Comfort Module Control Unit 7PP907064KG

€118.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 0AD927755BT

Porsche Cayenne 9PA Gearbox Control Unit Module Controller ECU 0AD927755BT

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1779061102

Fuse Box Mercedes W177 Relay Fuse Box COntrol Module Unit A1779061102

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9157158

BMW E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit 9157158

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. FK72-14C676-AA

Land Rover L550 Jaguar XE F-Pace Air Module Crash Impact Sensor FK72-14C676-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR000916

Range Rover Evoque L538 Sun Sensor Control Unit 8624285

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9315150

BMW X3 F25 Front Distribution Box Fuse Box Power Control Unit 9315150

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6960225

BMW E65 E66 E67 Sensor Vehicle Centre Air Control Unit Module 6960225

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06E971627N

Audi A4 B8 A6 C7 A7 C7 4G Fuel Injector Wiring Cable 3.0 TFSI 06E971627N

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9282118

BMW F10 CAS4 Control Unit Module 9282118 61359282118

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P6907530F

VW Volkswagen Touareg 7P MK2 Gateway Control Unit Module ECU 7P6907530F

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5A20559

BMW F40 F44 Transmission EGS Control Module Unit ECU 5A20559

€203.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8U0945094H-1

Audi Q3 8U Rear Tail Light Lamp Wiring Harness Cable Plug Right O/S 8U0945094H

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8U0945093M-1

Audi Q3 8U Tail Light LED Lamp Wiring Loom Plug Rear Left N/S Outer 8U0945093M

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8513249-1

BMW X3 F25 Engine ECU Kit DDE CAS4 N47N 20dX 184HP Manual 8513249 Keys + Lock

€284.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. F30-SCREEN-2

BMW F30 F31 Dashboard Dash Central Information Screen Display Android 10.25"

€237.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5M5T14B192CA

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9079006906

Mercedes Sprinter W907 W910 Ignition Lock Control Unit Module ECU A9079006906

€161.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2048704658

Mercedes W204 Radio Control Function Button Knob Controller Unit A2048704658

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2188205061-1

Mercedes C218 Front Headlight Wiring Harness Cable Right O/S A2188205061

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. J8A2-70718-CAA

Land Rover Range Rover Sport L494 Telematics Unit 3G Connectivity J8A2-70718-CAA

€123.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1179008700

Mercedes GLA X156 Air Module Safety Belt Tensioner Unit Control A1179008700

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3455306

Mini R57 Cabrio Convertible DWA Alarm System Relay ECU 3455306 65753455306

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6850374

BMW 1 3 Series E81 E87 E88 E90 E91 E92 Accelerator Speed Sensor 6850374 6778421

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2046280218

Mercedes W204 Battery Bracket Mount Support Holder A2046280218

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. K8D2-10757-A

Range Rover Evoque L551 Battery Box Tray Cover Panel Side Front K8D2-10757-A

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7953081

BMW X1 U11 Battery Cable Negative Terminal PHEV Earth Cable Wiring PHEV 7953081

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0018209126

Mercedes CLC CLK Class CL203 W203 C209 Crash Sensor A0018209126

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9298947-2

BMW Z4 E89 Body Control Module ECU Junction Box PL2RR JBBFE 9298947

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1398342080

Citroën Relay III Alarm Buzzer Wiring Harness Cable Plug 1398342080

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9361601

BMW Active Tourer F45 Door Wiring Loom Harness Cable Rear Right O/S 9361577

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9305736

BMW X1 E84 ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9305736

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6Q0951253

Volkswagen Polo Mk4 Passat B7 Additional Brake Light Relay 4 Pin Black 6Q0951253

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9267203

BMW 3 Series E90 LCI Body Control Module H1 PL2RR JBBFE IIIR 61359267203 9267203

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BM2J-19H405-AA

Ford S-Max Galaxy Mk3 Reverse Camera Control Module BM2J-19H405-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 02Z911023N

Volkswagen VW Golf VI Engine Starter Motor 1.6TDI 2.0 TDI Diesel 02Z911023N

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6927270

BMW 5 Series E60 Seat Control Unit Module Left Right N/O/S Temic 6927270

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8R0907468AE

Audi A5 8T 2.0 TDI Gateway Control Module Unit ECU 8R0907468AE

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8635815

BMW F20 F30 LCI 118i 318i B38 Gearbox Wiring Loom Harness Cable 8635815

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1329060026

Smart Fortwo 451 Starter Alternator 120A 14V 1.0 M132 Petrol A1329060026

€379.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2465403505

Door Wiring Mercedes W176 W246 Front Passenger Side Cable Harness A2465403505

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

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