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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Land Rover Range Rover L322 Battery Negative Terminal Cable AH42-10C679-AF

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8602988

MINI F54 F55 F56 F57 F60 Cable Alternator Starter Wire 8602988

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F0959795N

Door Module Audi A4 B8 A6 C6 Rear Unit Control ECU Left N/S 4F0959795N

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8576333-10

BMW F20 F21 Engine Control Unit Diesel N47N 184HP ECU DDE Set 8517862 Automatic

€132.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8U0959655C

Audi Q3 8U Air Module ECU Sensor Control Unit 8U0959655C

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8634124

BMW F40 F45 X1 F48 Mini F55 F56 F60 Alternator Generator Denso 120A 8634124

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8J0907159

Audi TT 8J Alarm Signal Body Sound Impact Control Module Unit 8J0907159B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. XRA500030

Land Rover Discovery 3 L319 Traffic Control Module Receiver Unit XRA500030

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DK62-14300-AE

Range Rover L405 Positive Battery Cable Wiring Terminal Module DK62-14300-AE

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. YC1A14B321CC

Ford Transit MK6 Restraints Control Module Air Module Unit YC1A14B321CC

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F0959795A

Audi A6 4F C6 Door Control Unit Module ECU Rear Left N/S 4F0959795A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9380940

BMW F45 Front Door Wiring Passenger Door Cable Wiring Loom Harness 9380940

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F1862335

Audi Q7 4L Bluetooth Interface Telephone Control Module ECU Unit 4F1862335

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7G9T-14A073-DD

Ford Mondeo Mk4 Body Control Module BCM Fuse Box Junction 7G9T-14A073-DD

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2028281114

Mercedes-Benz C CLK W202 W208 Alarm Control Module Bracket Holder A2028281114

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C8971557AN

Volkswagen Passat CC Front Door Wiring Loom Harness Right O/S 3C8971557AN

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2044400235

Mercedes C204 Front Bumper Wiring Harness Loom Cable A2044400235

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BK3T-14335-AC

Ford Transit Mk8 Anti Theft Alarm Wiring Harness Loom Cable BK3T-14335-AC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0941597F-1

Porsche Boxster 718 982 Headlight LED Ballast Control Module Unit 8K0941597F

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9824742880

Peugeot Boxer Citroen Relay III Alternator Generator 1.5 HDI Diesel 9824742880

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7369120-2

BMW F30 F31 LCI Plug Socket Rear Right O/S Light Trunk Lid Boot Wiring 6984754

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009068106

Alternator Generator Mercedes W177 W247 M260 Petrol Engine 150A A0009068106

€237.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0937700B

Volkswagen VW Caddy 2K Fuse Box Control Module Connector Plug Socket 1K0937700B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9270500

BMW X3 E83 PDC Parking Ultrasonic Sensor Angled Schwarz

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9252819

BMW F01 F07 F10 F11 F12 Camera Module Based Assist Systems Control Unit 9252819

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9390576

Airbag Module BMW X1 F48 F45 F46 Air Bag Control Unit ECU 9390576

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9386929

BMW F22 F23 LCI Rear Bumper PDC Cables Wiring Loom Set 79720211

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1J0973332A

Audi RS4 B8 Cable Loom Wiring Plug Socket 2 Pins 1J0973332A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9118108

BMW 1 Series E81 E82 Wiring Set Door Co-driver 9118109

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9H22-14290-VA

Land Rover Discovery 3 L319 Fuse Box Power Distribution 9H22-14290-VA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8510221-3

BMW E90 E91 LCI E92 325d Diesel N57 204HP ECU Engine Kit DDE 8510221 CAS3 + Key

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8J0971679B

Audi TT 8j TTS Glove Box Dash Panel Storage Wiring Cable Harness Wire 8J0971679B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9247024

BMW F01 LCI F07 GT F10 F11 X3 F25 Air Module Control Unit ECU 9247024

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V4971030K

Audi A3 S3 8V Front Passenger Door Wiring Harness Loom Cable 8V4971030K

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0959592K

Audi Q2 GA Door Module Control Unit Front Passenger Side 5Q0959592K

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W6971029BF

Audi A5 F5 Front Door Wiring Harness Cable Driver's Side 8W6971029BF

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6972064

BMW 1 3 X1 SERIES E81 E87 E90 E91 E92 Ultra Sonic Module Alarm System 6972064

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P5906033

Porsche Cayenne 92A 4.8 500HP Engine Control Unit ECU 7P5906033 Automatic

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. M8A2-14A076-AA

Range Rover Velar L560 Fuse Box Unit Upper Cover Cap Trim M8A2-14A076-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9268710-1

BMW F01 Display Screen On-Board Central Information Monitor 10,25" 9241819

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9325723

BMW G30 G31 Suppression Filter Aerial Antenna Amplifier Module 9325723

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LT1T-15604-DCB

Ford Transit Connect Mk2 Body Control Fuse Box Module BCM LT1T-15604-DCB

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F1971687A

Audi A6 RS6 C6 Door Wiring Loom Cable Rear Right Left N/O/S 4F1971687A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2208203085

Mercedes C199 C215 W220 Air Module ECU Control Unit S430 113941 A2208203085

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 05C907394D-1

Audi A1 GB Mk2 Engine Module ECU Kit 1.0 TSI Petrol 110HP DLAA 05C907394D Manual

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2139001909

Mercedes W213 Ambient Lighting Control Unit Module ECU A2139001909

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5A43722

BMW X1 U11 Wiring Loom Harness Cable 5A43722

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. KD45-57KC0

Mazda 6 GJ Impact Crash Sensor Control Unit Module KD45-57KC0

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BK31-13405-AG-2

Ford Transit Mk8 Rear Tail Light Lamp Left N/S Harness Wire Loom BK31-13405-AG

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06E903016E

Audi A4 B7 Alternator Generator 150A 14V 3.2 FSI Petrol 06E903016E

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009004836

Mercedes W177 W247 Driving Dynamics Module Control Unit ECU A0009004836

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9116978

BMW X5 Series E70 Cable Loom Door Rear Left Right N/O/S Wiring Harness 9116978

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 95B919599F

Porsche Macan 95B On board Navigation Display Monitor Screen 95B919599F

€617.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P6035552N

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Right O/S 7P6035552N

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7789225

BMW E65 E66 730d M57N Diesel Cable Starter-Base B+ 7789225

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0015426519

Mercedes C140 Brake Pump Relay Electrical Fuse Module Control Unit A0015426519

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5WA971794R

VW Golf 8 1.5 eTSI HV Battery Positive Terminal Harness Cable Wiring 5WA971794R

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 02M911024B

Volkswagen VW Golf Mk7 VII Passat B8 Starter Motor Diesel Engine 02M911024B

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009007607

Mercedes-Benz E-Class W207 W212 Front Windscreen Windshield Lane Assist Camera

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L6919473D

Porsche Cayenne 955 9PA Rear PDC Parking Sensor Indicator Display 7L6919473D

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9393780

BMW F45 F46 Mini F55 F56 F57 KaFAS Camera Front Lane Assist ECU Module 9393780

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0971035AS

Audi RS4 B8 Door Wiring Harness Cable Loom Front Left N/S 8K0971035AS

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2479004505-1

Mercedes Vito W447 Sprinter W907 W910 Telematics Module Control Unit A2479004505

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8U0971035AL

Audi Q3 8U Door Loom Wiring Harness Cable Front Right O/S 8U0971035AL

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8H1971035CR

Audi A4 S Line Door Wiring Harness Cable Front Passenger 8H1971035CR 8H1971035CS

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8S0915181A

Audi TT FV HV Battery Negative Terminal Cable Harness Loom Wiring 8S0915181A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2661538979-1

Mercedes W169 A150 W245 B150 Engine Control ECU Kit A2661538979 + Key Automatic

€265.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DWN500032

Range Rover Sport L320 Battery Box Housing Cover Trim Top Panel DWN500032

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0959392E

Audi A4 B9 Front Door Control Module ECU Passenger Side 8W0959392E

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F0919603

Audi A6 C6 Display Screen Multimedia Navigation Dashboard Unit 4F0919603

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9383681

Mini F55 Fuse Box Front Body Control Module ECU BCM Unit 13275881

€123.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FW93-19C098-AB

Land Range Rover Sport L494 DAB Combiner Antenna Amplifier Module FW93-19C098-AB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FW93-11B608-AD

Range Rover Sport L494 Multimedia Radio CD Player Head Unit FW93-11B608-AD

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DK52-14F238-AC

Range Rover L405 Rear Parking Sensor Wiring Loom Cable Blind Spot DK52-14F238-AC

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 30422-ELC-60020-AA

Mercedes Vito W639 Control Unit ECU Taxi Penso EL Inverter 30422-ELC-60020-AA

€70.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059003913

Mercedes W205 Relay Module Body Control Module Unit SAM BCM A2059003913

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. REN2000

Renegade 2000 Car Audio Sound Amplifier 2000W With Wiring

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. M8A2-14A076-CB

Range Rover Velar L560 Fuse Box Unit Upper Cover Cap Trim M8A2-14A076-CB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8R0971687H

Audi Q5 8R Rear Door Wiring Loom Harness Rear Right O/S 8R0971687H

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0035223P

Audi A4 S4 8T A5 S5 8T Stereo Sound System Amplifier Module Unit ECU 8T0035223P

€80.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6F0971162J

Seat Ibiza Mk5 Fr Rear Door Wiring Loom Harness Wire Right O/S 6F0971162J

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AM2T-18812-YB

Ford S-Max Navigation Radio Antenna Wiring Harness Cable AM2T-18812-YB

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8XA035670D

Audi A1 8X Multimedia CD Head Unit Stereo Harman Becker 8XA035670D

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. YFB100500LNF

Land Rover Discovery 2 L318 Digital Dash Clock LCD YFB100500LNF

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2465402610

Mercedes-Benz A B W176 W246 160 180 CDI Alternator Cable Loom Wire A2465402610

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06E911021D

Audi S5 8T A6 C7 Engine Starter Motor 3.0 TFSI Petrol CGWC 06E911021D

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6817908

Ford Mondeo Mk5 Positive Battery Cable Clamp Terminal 6817908

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3403145

BMW F21 F22 F23 X3 E83 Plug Housing Box Cover Cable Mounting 3403145

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5NA980611A

Volkswagen Golf 8 CD1 Wireless Phone Charging Center Console Module 5NA980611A

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. W639 Taxi Modules

Mercedes Vito W639 Control Unit Set Taxi Rear Wheel Steering Intercom Module

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L0959772

VW Volkswagen Golf Mk5 Phaeton 3D Heated Seat Control Module Unit 7L0959772

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BV61-12A650-EGC-1

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

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9653805580

Peugeot 308 1.6 HDI Diesel Glow Plug Wiring Loom Cable Wiring 9653805580

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8577834

BMW F30 X3 F25 N57N 330d 30dX 258HP Engine Control Unit ECU 8577834 Automatic

€156.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. JK72-14A076-AA

Land Rover Discovery Sport L550 Fuse Box Cover Cap JK72-14A076-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9354068

BMW F45 F46 Door Interior Lighting Wiring Harness Cable Front Right O/S 9354068

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8U0971029AF

Audi Q3 8U Front Door Wiring Loom Harness Cable Driver's Side 8U0971029AF

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2048709289

Mercedes W204 Right O/S Antenna Amplifier Filter Module A2048709289

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FS7T-18D816-BA

Ford Mondeo MK5 Aerial Antenna Amplifier Module Unit FS7T-18D816-BA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

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