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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Audi A5 8T Parktronic Parking Sensor Module Unit ECU 8K0919475

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0959792G

Audi A8L 4H Front Door Control Module Left N/S Unit ECU 4H0959792G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8S0915181A

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P4945096C-2

Audi A3 8P Rear Tail Brake Light Lamp Wiring Cable Right O/S Side 8P4945096C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059911024P

Audi A6 C7 A7 4G 2.0 TDI Starter Motor Diesel Engine Denso 059911024P

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0911075B

Audi A8L 4H Power Positive Distribution Junction Jumper Box Housing 4H0911075B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0035223J

Audi A4 B8 Suond Amplifier System Speaker Module Unit 8T0035223J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0959793G

Audi A4 B8 Door Module Front Left N/S Control Unit ECU 8T0959793G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0971547

Audi A6 C6 Cable Wiring Loom Heater Matrix Air Conditioning Cable 4F0971547

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8H0951178

Audi A4 B7 Cabrio Alarm Signal Body Control Sensor Module Unit 8H0951178

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0907063K

Audi A1 8X Body Control Module Unit ECU 8X0907063K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0971679L

Audi A3 8P Dashboard Glove Box Wiring Loom Harness 8P0971679L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0959651A

Audi A4 B7 Front Crash Impact Air Module Sensor Unit Module 8E0959651A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0907063AF

Audi Q3 S Line BCM Body Control Module Unit ECU 8X0907063AF

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959795C

Audi A4 B8 Door Module Rear Left Right N/O/S Control Unit Module ECU 8K0959795C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 80A971687H

Audi Q5 FY Rear Door Wiring Harness Loom Cable Left Right N/O/S 80A971687H

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0971679K

Audi A3 S3 8P Dashboard Glove Box Wiring Loom Cable Harness 8P0971679K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0959651

Audi A4 S4 B6 A7 4B Crash Impact Sensor 8E0959651

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971228H

Audi A4 B8 3.0 TDI Starter Alternator Wiring Loom Cable Harness 8K0971228H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0907468F

Audi A5 8T Gateway Control Module Unit ECU 8T0907468F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8S0963553D

Volkswagen Skoda Seat Audi Seat Pressure Sensor Front Passenger Side 8S0963553D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0907115N

Audi TT 8J 2.0 TFSI BWA 200HP Engine Control Module ECU Manual 8J0907115N

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0919475L

Audi A6 C7 PDC Parking Distance Control Module Unit ECU 4H0919475L

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0959107A

Audi Q3 8U Tailgate Lift Boot Lid Control Unit Module Trunk 8U0959107A

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907383D

Audi Q5 8R A5 8T Tow Bar Control Module ECU 8K0907383D

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L911024B

Audi A6 C7 2.0 TDI CGLC Diesel Starter Motor 03L911024B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7M0951253A-1

Audi VW Volkswagen Seat Relay Unit Module 4 Pins Set x2 7M0951253A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K2907115P-1

Audi A5 8T A4 B8 8K 2.0 TFSI CDNC 211HP Engine ECU Kit 8K2907115P Key + Ignition

€303.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0907530K

Audi A3 8P Central Gateway Control Unit Module Relay ECU 1K0907530K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0959794B

Audi Q7 4L Door Control Module Electrical Unit ECU Rear Right O/S 4L0959794B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0959792E

Audi A6 C6 Front Passenger Side Door Left N/S Module Unit Control ECU 4F0959792E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0959593H

Audi A4 S4 B9 Front Door Control Module Unit Driver's Side 8W0959593H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0907468AQ

Audi A1 8X Central Gateway Control Unit Module Relay ECU 8U0907468AQ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0035456A

Antenna Amplifier Audi Q5 8R A6 C6 A5 8T Mobile Phone Module Unit 8J0035456A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F1971687S

Audi A6 C6 Rear Door Wiring Left Right N/O/S Harness Loom Cable 4F1971687S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0953549A

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

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907530AH

Audi A3 S3 RS3 8V Gateway Control Module GW MQB Mid Unit ECU 5Q0907530AH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0035785-1

Audi A3 8P Multimedia Interface Unit Module Bracket Mount 8P0035785

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907801E

AUDI A7 4G8 Electric Handbrake Control Module TRW 4H0907801E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W1959593

Audi Q5 FY Front Door Control Module Unit Right O/S Side 8W1959593

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P4945095E-3

Audi A3 8P Trunk Lid Tail Lamp Light Wiring Cable Rear Left N/S 8P4945095E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C0907361E

Fuse Box Audi A1 Seat Ibiza Control Module Relay Box 6C0907361E

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907468AC

Audi A8L 4H Gateway Control Module Unit 4H0907468AC

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0953549

Audi A3 8P Steering Module Control Unit ECU 8P0953549

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6907357C

Audi A3 8V VW Touareg 7P Xenon Headlight Module Control Unit 7P6907357C

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P3035223B

Audi S3 8P Audio Sound System Amplifier Bose 290328

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0951253

Audi VW Volkswagen Seat Relay 643 Unit Module 4 Pins 8K0951253

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3Q0906121B

Audi A3 8V 30 TDI DGTE Diesel Fuel Pump Module Control Unit ECU 3Q0906121B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0907637B

Audi A6 C6 Yaw Module Rotation Rate Acceleration Sensor 8E0907637B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0919390F

Audi A6 C8 Door Panel LED Module Light Unit Rear Right O/S 4K0919390F

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0919283F

Parking Distance Audi A3 8V TT Mk3 Seat Leon MK3 Control Module 5Q0919283F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937084AE

Audi A3 8V Module BCM Body Control Unit Module ECU 5Q0937084AE

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907063

Audi A4 B8 Body Control Unit Basic Module BCM 8K0907063

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0919283E

Audi Q7 4L PDC Parking Distance Sensor Control Module Unit ECU 4L0919283E

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0035186M

Audi TT 8J Radio CD Player Professional Audio Concern Head Unit 8J0035186M

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907637A

Audi A5 8T Acceleration Yaw Rate Sensor Module Control Unit ECU 8K0907637A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06H911021D

Audi A4 B8 Petrol Engine Starter Motor Actuator 1.8 2.0 TFSI 06H911021D

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0919475B

Audi A5 8T Park Parking Assist PDC Distance Control Unit Module 8K0919475B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W6035412A

Audi S5 F5 Trunk Bass Loudspeaker Speaker Rear Center 8W6035412A

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0959792B

Audi Q7 4L Door Control Unit Module ECU Passenger Side 4L0959792B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0971035AM

Audi Q5 8R Door Wiring Loom Harness Electrical Cable Driver's Side 8R0971035AM

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 83A907428C

Audi RSQ3 F3 Reversing Camera Control Unit Module 83A907428C

€360.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P4971693T

Audi A3 8P Door Wiring Harness Loom Cables Rear Left Right N/O/S 8P4971693T

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8959795G

Audi A6 C7 Rear Door Control Module Unit ECU Left Right N/O/S 4G8959795G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0962131

Antenna Control Module Audi Q3 RSQ3 F3 Line Keyless Entry 5Q0962131

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0971727

Audi A6 C8 Pressure Sensor Wiring Loom Harness Cable 4K0971727

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0907355B-1

Audi Q5 8R Adblue Metering Control Module Unit ECU 4L0907355B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06N907309A-1

Audi A4 B9 8W 35 TFSI DMSB 150 HP Engine ECU Kit Body + Key 06N907309A Automatic

€379.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907063AJ

Audi A5 8T Body Control Comfort Unit Module BCM Unit ECU 8K0907063AJ

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971687S

Audi A4 B8 Door Wiring Harness Loom Rear Left N/S Cabling 8K0971687S

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059907309-2

Audi S5 F5 3.0 TDI DMKC 341 HP Engine Control Module Unit 059907309AC Automatic

€222.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971365

Audi A4 B8 Seat Occupancy Belt Alarm Wire Wiring Cable Loom Harness 8T0971365

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 83F877041A

Audi Q3 F3 Mk2 Panoramic Sunroof Control Unit Module ECU 83F877041A

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0955557A

Audi A6 C6 Door Crash Impact Sensor Front Left Right N/O/S 4F0955557A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0803123A

Audi Q5 8R Battery Hold Down Clamping Strip 8R0803123A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0AM911024A

Volkswagen Passat B7 Engine Starter Motor Actuator Starter 0AM911024A

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971104

Audi A5 8T Rear Bumper PDC Parking Sensor Wiring Harness Loom 8K0971104

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0919283E

Parking Distance Audi A3 8V TT Mk3 Seat Leon MK3 Control Module 5Q0919283E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0941824

Audi A6 C8 Fuse Box Relay Plug Socket Fuse Unit Holder Bracket 4H0941824

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0919129A

Audi A5 8T A6 C7 A7 4G A8 4H TV Tuner Digital Video Control Module 4G0919129A

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0035225AJ

Audi Q7 4L Radio Aerial Antenna Amplifier AM/FM 4L0035225AJ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907401H-1

Audi A8 D4 3.0 TDI Quattro CDTA 258HP Engine ECU Kit 4H0907401 BCM + Key + Lock

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0959794A

Audi A6 S6 Avant Quattro 4F Door Control Unit ECU Rear Right O/S 4F0959794A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G5971693C

Audi A6 C7 4G Door Card Harness Loom Cable Wiring Rear Left N/S 4G5971693C

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0971349S

Audi TT 8J Alternator Main Cable Wiring Harness Loom CBBB Manual 8J0971349S

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937084BS

Audi TTS FV 8S BCM Body Control Module Unit 5Q0937084BS

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971228AA

Audi A4 A5 S5 8T 8K 3.0 TFSI Alternator Wiring Harness Loom Cable 8K0971228AA

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 83A947356J

Audi Q3 F3 LED Rear Door LED Lighting Module Control Unit Left N/S 83A947356J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M0010006J

Audi Q7 4M Fuse Box Battery Terminal Cover Housing 4M0010006J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971035BA

Audi A5 8T Coupe Front Driver Side Door Wiring Harness Right O/S 8T0971035BA

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907551-2

Audi S4 B8 3.0 TFSI 333HP CAKA Quattro Engine Unit ECU Kit 8K0907551 Automatic

€303.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906023KQ

Audi A1 8X 1.6 TDI 105HP CAYC Engine Control ECU Kit BCM Key 03L906023KQ Manual

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 079911021D

Audi Q7 4L Engine Starter Motor Actuator Starter 079911021D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018H-1

Audi A4 B8 Engine Control Unit ECU Module 2.0 Diesel 143HP Automatic 03L906018HT

€137.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G5971687BR

Audi A6 C7 4G Rear Door Harness Wiring Loom Cable Left Right N/O/S 4G5971687BR

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1J0941365B

Audi A3 8l TT TTS 8N Fusebox Fuse Relay Box Cover Lid Top End Cap 1J0941365B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0945095C-1

Audi TT 8J Rear Tail Lamp Light Wiring Harness Cable Plug Left N/S 8J0945095C

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907063DH

Audi A7 4G8 BCM Body Control Module Unit ECU 4H0907063DH

€127.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0959121A

Audi A4 B9 A5 F5 Air Module Pedestrian Protection Sensor Crash 8W0959121A

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

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