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 A1 8X Dashboard Glove Box Wiring Loom Cable Storage Harness 8XA971679C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K907425C-1

Audi Q3 8U 2.0 TFSI CULB 180HP Quattro Engine ECU Kit 06K907425C Ignition + Key

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0035223

Audi A5 8T Audio Amplifier Sound Booster Control Unit Module 8T0035223

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0907335

Audi Q7 4L Quattro S Line Keyless Entry Antenna Control Module 4L0907335

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0907468K

Gateway Interface Audi A5 8T A4 B8 Control Unit Module ECU 8T0907468K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907637K

Audi A8L 4H Yaw Rate Domain Control Module Unit ECU 4H0907637K

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907348C

Audi A8 D4 4H Relay Fuse Bracket Holder Junction Box 4H0907348C

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8S0035021B

Audi TT FV Navi SD GPS MMI Multimedia Head Unit Module 8S0035021B

€522.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959651B

Audi A3 8V Front Impact Sensor Crash Detection Module Unit 5Q0959651B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8XA959655

Audi A1 8X Air Module Control Sensor SRS System ECU Unit 8XA959655

€47.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 4K0906121C

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8K0959663

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 4H0907063CD

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

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0881073B

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0910217C

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

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3Q0941329

Volkswagen Skoda Seat Audi Diesel Engine Adblue Module Control Unit 3Q0941329

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 80B907468G

Audi A4 B9 A5 F5 Gateway Diagnostic Interface Control Module Unit ECU 80B907468G

€208.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0035223F

Audi A4 B8 A5 8T Stereo Radio Sound System Speaker Amp Amplifier 8R0035223F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0907063CC

Audi A4 B9 BCM Body Control Module Comfort Unit ECU 8W0907063CC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937125A

Fuse Relay Box Volkswagen Audi Skoda Seat Engine Bay Supply Unit 5Q0937125A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0959792H

Door Module Audi A5 8T A4 B8 Control Front Left N/S Unit 8T0959792H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0907468

Audi A6 C6 Q7 4L Gateway Module Control Unit 4L0907468 4L0910468

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959793

Audi A5 8T Door Module Control Unit ECU Front Driver's Side 8K0959793

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0959792T

Audi A6 C6 Front Left N/S Door Lock Control Module Unit ECU 4F0959792T

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0907468C

Audi A5 8T 2.0 TDI Gateway Control Module Unit ECU 8R0907468C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0907468P

Audi S5 8T Gateway Control Unit Module ECU 8T0907468P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0035785A

Audi A5 8T MMI Multimedia Interface Unit Module Control ECU 8T0035785A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0959801F

Audi A3 8P Door Window Lifter Regulator Motor Front Right O/S 8P0959801F

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0971035A

Audi TT 8J Door Wiring Loom Harness Cable Driver Side 8J0971035A

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA937615

Audi A3 S3 8Y Fuse Box Control Module Relay Box Electrical Unit 5WA937615

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0907468Q

Audi Q3 8U Gateway Control Module Unit ECU 8U0907468Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0907468H

Audi A4 B8 Gateway Interface Control Module Unit ECU 8T0907468H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959792S

Audi A4 B8 Front Door Control Module Unit ECU Passenger Side 8K0959792S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0906121D

Audi A4 B9 A5 F5 A6 C8 Fuel Pump Control Pump Unit Module ECU 4K0906121D

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0862335F-1

Audi A4 B8 Bluetooth Multimedia Interface Control Module Unit ECU 8T0862335E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0907364B

Audi Q5 8R A5 8T A4 B8 Active Suspension Module Damping Control Unit 8R0907364B

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420919275

Audi A4 B8 A5 8T Rear Bumper PDC Sensor Parking Distance Control 420919275

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907530H

Audi A3 8V Gateway Interface Control Unit Module ECU Interface 5Q0907530H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AA907801H

Audi Q3 8U Parking Brake Handbrake Module Control Unit 3AA907801H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1J0906381B

Audi TT 8N Fuse Box Relay Control Unit Module 1J0906381B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0907468L

Audi A5 8F Gateway Control Unit Module ECU 8R0907468L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W8035225D

Audi A5 F5 Radio Aerial Antenna Amplifier Left Upper N/S 8W8035225D

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0910289K

Audi Q7 4L Body Control Comfort Unit Module BCM Unit ECU 4L0907289K

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0035223AP

Audi A4 S4 B8 Audio Amplifier Sound Booster Control Unit Module 8T0035223AP

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0959655F

Audi A4 B9 Air Module Crash Control Module Unit ECU 8W0959655F

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W6907217A

Audi A5 F5 Front Windscreen Windshield Lane Assist Camera 8W6907217A

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0035502B

Audi A4 B9 Wireless Charger Centre Console Phone Charging Module 8W0035502B

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8A0937530

Audi A6 C6 Fuse Relay Box Module Unit Holder Bracket 8A0937530

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0959754K

Audi A4 B8 A5 8T A6 C7 A7 4G Remote Key Fob Module 4H0959754K

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M1959592D

Audi A6 C8 A7 4K Door Module Control Unit Front Passenger Side 4M1959592D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0907468AH

Audi A4 Allroad Avant A5 S5 Q5 RS5 Diagnosis Inteface Gateway Module 8T0907468AH

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0907357F

Audi S4 B7 Headlight Head Light Lamp Range Control Unit Module ECU 8P0907357F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907801H

Parking Brake Module Audi A6 C7 A7 4G A8 4H Handbrake Control Unit 4H0907801H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P3907357B-1

Audi A3 S3 8P Headlight Range Module Xenon Lamp Control Unit ECU 8P3907357B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906022NN

Audi A4 B8 2.0 TDI 143HP CAGA Diesel Engine Control Unit ECU Module 03L906022NN

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5QS907338B

Audi A3 S3 8Y Headlight Head Light Lamp Range Control Unit Module ECU 5QS907338B

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K9035225

Audi RS4 B8 Radio Aerial Antenna Amplifier AM/FM 8K9035225

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971693B

Audi A4 B8 Rear Door Card Harness Wiring Cable Loom Left Right N/O/S 8K0971693B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3G0962243D

Audi A4 B9 Rear Hatch Boot Lid Tailgate Opening Control Module Unit 3G0962243D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959795G

Audi Q5 8R Rear Door Control Module Unit ECU Left Right N/O/S 8K0959795G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0907063R

Audi TT 8J BCM Body Control Module Unit ECU 8P0907063R

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L903023K

Audi A3 8V Volkswagen Golf Mk7 Alternator Generator 140A 1.6 2.0 TDI 04L903023K

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959792D

AUDI S5 8T Door Control Module ECU Front Left N/S 8K0959792D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0907280B

Audi A8 4E S8 D3 Power Supply Control Module Unit ECU 4E0907280B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L903017E

Audi A4 B8 A5 8T Q5 8R Quattro Alternator Generator 2.0 TDI 03L903017

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0959793F

Audi A1 8X Front Door Module Unit Control Driver's Side Right O/S 8X0959793F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8L0971035H

Audi A3 S3 8L Front Door Card Panel Wiring Harness Right O/S 8L0971035H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0971228AC

Audi Q2 GA Volkswagen T Roc Battery Terminal Positive Cable 5Q0971228AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0959593N

Audi A4 B9 Front Door Module Control Unit ECU Driver's Side 8W0959593N

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0971693B

Audi Q5 8R Rear Door Card Wiring Loom Left Right N/O/S 8R0971693

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0959760

Audi Q7 4L Front Memory Adjustment Module Control Left Right N/O/S 4L0959760

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0910441

AUDI A8 S8 D3 Reversing Camera Control Module Rear View Unit ECU 4E0910441

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8H0959655G

Audi A4 B7 Air Module Control Unit ECU Impact Sensor 8H0959655G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959793E

Audi A4 B8 Door Module Front Drive Side Control Unit ECU 8K0959793E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907064BN

Audi A6 C7 Saloon CCM Comfort Control Module Onboard Unit ECU 4H0907064BN

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971349JQ

Audi A3 8P 1.2 TFSI CBZB Alternator Wiring Harness Cable Loom 1K0971349JQ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906022FL-1

Audi A6 C6 2.0 TDI 233HP CAGB Engine Control ECU Kit 03L906022FL Key + Lock

€180.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0035456

Audi A7 4G Aerial Antenna Amplifier Control Unit Module 4H0035456

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907468AF

Audi A8 D4 Central Diagnostic Getaway PKO Control Unit Module ECU 4H0907468AF

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C903023S

Audi A1 8X 1.4 TSI CAXA Alternator 03C903023S

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H4907357B

Audi A8 D4 Headlight Head Light Lamp Range Control Unit Module ECU 4H4907357B

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0AM911023N

Audi A3 8V 1.4 TFSI Petrol Starter Motor Engine Actuator Unit 0AM911023N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M1907468D

Audi A4 B9 Gateway Control Module Unit ECU 4M1907468D

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Part no. 8K0915181C

Audi A6 C6 Battery Negative Terminal Cable Wiring Wire 8K0915181C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0919475

Audi A3 8P PDC Parking Distance Control Module ECU Unit 8P0919475

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 4F0907801B

Audi A6 C6 Electric Parking Hand Brake Module Control Unit ECU 4F0907801B

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0959593E

Audi A4 B9 Front Door Control Module Unit Driver's Side 8W0959593E

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0857925G

Audi A3 8P TT 8J A4 B7 Ipod Interface Multimedia Storage Compartment 8E0857925G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0959654

Audi A3 8P Steering Wheel Position Angle Sensor Control Unit Module 1K0959654

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959392B

Audi A3 S3 8V Door Control Module Front Passenger Side Left N/S 5Q0959392B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0907468M

Audi A5 8T Central Gateway Module ECU Control Unit Lear 8T0907468D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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