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 A4 B7 Cabrio Aerial Antenna Amplifier Module Unit Right O/S 8H0035225L

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CK4T-19G490-AB

Ford Transit Mk8 Rear View Parking Camera Backup Camera CK4T-19G490-AB

€132.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 2522564

Ford Transit Mk8 Starter Positive Plus Wiring Loom Harness KK3T-14A120-BD

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BK2T-18C815-FJ

Ford Transit Custom Radio Head Unit Stereo CD Player Screen BK2T-18C815-FJ

€104.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 038907281C

Skoda Fabia Mk1 6Y Glow Plug Relay Unit Black Diesel Engine 038907281C

€23.95

Free delivery: Sep 23 – 24

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Part no. 3C0907521

Heater Resistor Volkswagen VW Touran 1T Blower Motor Fan Resistor 3C0907521

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5A63FF6

Mini F65 F66 F67 Central Bass Speaker Woofer ALEV 3 Right O/S 5A63FF6

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7N0959792J

VW Volkswagen Sharan 7N Passenger's Side Door ECU Module Control Unit 7N0959792F

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8781328

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 8781328

€85.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1Z0907115A

Skoda Octavia RS VRS 1Z II 2.0 TFSI BWA 200HP Engine Unit ECU 1Z0907115A Manual

€113.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2075452540

Mercedes-Benz E W207 Cabrio A207 Auxilliary Battery Bracket A2075452540

€23.95

Free delivery: Sep 23 – 24

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Part no. 3C8035730B

Skoda Octavia Super Mk2 VW Eos Golf Mk7 Bluetooth Control Module ECU 3C8035730B

€104.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1825318-2

Ford Focus Mk3 Rear Tail Light Lamp Wiring Loom Harness Right O/S BM51-13404-AK

€23.95

Free delivery: Sep 23 – 24

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Part no. 9282424

BMW 3 5 Series F10 F30 Control Unit Module Top Rear Side View Camera 9282424

€89.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8T2T-14B192-AB

Ford Mustang GT Mk6 Main Power Relay 4 Pins 8T2T-14B192-AB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. H1BT-18808-GB

Ford Puma St Cf7 Loud Speaker Door Speaker Rear Left Right N/O/S H1BT-18808-GB

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. F1CT-19G481-AJ

Ford Kuga Mk2 Keyless Entry Control Module ECU Unit F1CT-19G481-AJ

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1649007000-1

Mercedes V251 SAM Body Control Module Rear Unit A1649007000

€474.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0008208305

Mercedes C118 Seat Inflation Occupancy Sensor A0008208305

€104.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. JU5T-17D547

Ford Ranger Mk3 Windscreen Rain Sensor Module Control Unit JU5T-17D547

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. GX63-15C859-DM

Land Rover Discovery Sport L550 PDC Parking Module Control Unit GX63-15C859-DM

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9274023

BMW F20 F21 F30 F31 REM Rear Electronic Module Fuse Box Control Unit V3 9274023

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8519005-1

BMW X1 E84 18dX Diesel N47N Engine Control Unit ECU Kit DDE 8519005 CAS3 Key

€85.95

Free delivery: Sep 23 – 24

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Part no. 7P5035225M

Porsche Cayenne 92A Antenna Aerial Amplifier Module Control Unit 7P5035225M

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 99661011100

Porsche 911 986 996 Fuse Relay Box Mounting Block 9603 Petrol 99661011100

€42.95

Free delivery: Sep 23 – 24

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Part no. 1Q0919283

Volkswagen EOS Park Aid Sensors PDC Control Module Unit ECU 1Q0919283

€23.95

Free delivery: Sep 23 – 24

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Part no. 1393415

BMW 3 5 7 Series E36 E38 E90 E91 F10 F11 Change-Over Contact Relay Grey 1393415

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7P0937548H

Porsche Cayenne 92A Battery Distribution Fuse Box Relay Module 7P0937548H

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8H0035225J

Audi A4 B7 Cabrio Aerial Antenna Amplifier Module Unit Left N/S 8H0035225J

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. MX73-11001-AC

Land Range Rover Velar L560 Starter Motor 12V 2.0 Diesel AJ20D4 MX73-11001-AC

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469002603-1

Mercedes W176 W246 W166 Windscreen Windshield Rain Sensor Unit A2469002603

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. KV6T-14B060-AAF

Ford Transit Connect Battery Cable Engine Wiring Harness Loom KV6T-14B060-AAF

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6841603-2

Mini F55 F56 Radio Mini Basis CD Player Head Unit Alpine 6818045 TB00004A

€123.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9286952

BMW X3 F25 X4 F26 Central Gateway Control Module ECU Unit 9286952

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059006047

SAM Module Mercedes W205 GLC X253 Rear Comfort Control Unit ECU A2059006047

€127.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7199894-3

BMW E90 E91 LCI Front Fog Light Wiring Harness Cable Plug Right O/S 7199894

€23.95

Free delivery: Sep 23 – 24

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Part no. N1XT-14D338-ADC

VW Volkswagen Amarok NF Wiring Harness Loom Cable N1XT-14D338-ADC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1825321-2

Ford Focus Mk3 Rear Tail Light Lamp Wiring Loom Harness Left N/S BM51-13405-AK

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009067702-2

Mercedes W204 W207 W212 Alternator Generator Diesel Engine 180A 14V 209189R

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. N000000004325

Mercedes W169 W204 W211 C219 Replacement Fuse Kit Set N000000004325

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. LU5T-14G371-GXF-2

Ford Transit Mk8 Navigation Sat Nav Module Unit LU5T-14G371-GXF

€284.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8519663-11

Mini Cooper D R60 ALL4 N47N 143HP 2.0 Engine ECU Kit DDE 8519663 + CAS3 + Key

€142.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9177784

BMW X5 E70 X6 E71 X6 E72 Map Fuse Box Grouping Diagram Card 9177784

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0937086BK-1

Volkswagen Golf Sportsvan Body Control Comfort Unit Module BCM Unit 5Q0937086BK

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. EB3T-14A597-BA

Ford Ranger Mk3 A/C Climate Control Sun Light Sensor Unit EB3T-14A597-BA

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5CH971121E

Volkswagen Jetta A6 Mk6 Front Door Wiring Harness Cable Driver Side 5CH971121E

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CPLA-14Q073-AA

Range Rover Discovery Sport L550 Fuse Box Control Module CPLA-14Q073-AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 83A971085S

Audi Q3 F3 Front Bumper Wiring Harness Loom 83A971085S

€85.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9211840

BMW F01 Wiring Loom Cable Harness 9211840

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6836210

Telematics Control Unit Mini F54 F55 F56 F57 F60 Module 84106836210 6836210

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7M150S

MEKEDE BMW E90 E92 Head Unit Radio Audio Player Android Display Screen 9" 7M150S

€142.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G5971035CA

Audi S6 C7 Door Wire Wiring Harness Loom Cable Front Driver Side 4G5971035CA

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9265835

Fuse Box Holder BMW X5 F15 X6 F16 Control Unit Module Bracket Carrier 9265835

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 83A947356K

Audi Q3 F3 LED Rear Door LED Lighting Module Control Unit Right O/S 83A947356K

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. FPLA-14386-BD

Range Rover Evoque L538 Engine Cooling Fan Harness Wire Cable FPLA-14386-BD

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8585727

Wiring BMW F21 F30 F34 F36 Diesel N47N Engine Gearbox Module Harness 8585727

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7P0971235B

Porsche Cayenne High Voltage Wiring Harness Earth Line 7P0971235B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2049009907-2

Mercedes W204 Navigation Radio Player Head Unit Computer A2049009907

€227.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059001513

Mercedes W205 S205 C205 Air Conditioning Control Module unit ECU A2059001513

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8V4971693B

Audi A3 RS3 8V Rear Door Wiring Loom Harness Left Right N/O/S 8V4971693B

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9797876

BMW X1 U11 Battery Trim Cover Mount Bracket 9797876

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1J0937550AB

Audi A3 8L VW Golf Mk4 Battery Fuse Box Terminal Cover Panel 1J0937550AB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1679008309

Mercedes W177 W247 Telematics Module Communication Control Unit A1679008309

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0907655D

VW Touran 1T Yaw Sensor ESP Rotation Rate Control Unit Module 1K0907655D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6C1T-14300-BB

Ford Transit Mk7 Battery Positive Lead Cable Harness Wire 6C1T-14300-BB

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. C1BT-14B321-CE

Ford Fiesta Mk7 Air Module Control Unit ECU C1BT-14B321-CE

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0947355M

Audi A4 B9 LED Module Light Unit Wiring Harness Right Rear O/S 8W0947355M

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2075453840

Mercedes-Benz E W207 Cabrio A207 Exhaust BlueTec Control Unit Module Bracket

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4M0959792M

Audi S5 F5 Door Control Module Unit Front Passenger Side 4M0959792M

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 735783119

Fiat Ducato Peugeot Boxer RadioPlayer Multimedia Display Screen 735783119

€474.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2465400340-2

Mercedes W176 Fuse Relay Box Control Unit A2465400340 A2465400140

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0937517-1

Audi A3 RS3 8V Potential Power Distribution Junction Box Jump Point 1K0937517

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7311541

BMW 2 Series F22 F87 M2 Rear Third Stoplamp Stop Lamp Brake Light White 7311541

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1679001520

Mercedes C118 W167 W177 W247 Ignition Control Module Unit ECU A1679001520

€85.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G8959793A

AUDI A7 4G8 Door Control Module Front Left N/S Driver Side 4G8959793A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0971250AB

Audi A3 S3 8V Negative Battery Terminal Earth Cable Lead Wiring 5Q0971250AB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0907064JF

Audi A4 B8 A5 8T Q5 8R Body Control Module BCM Unit ECU 8K0907064JF

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2219002802

Mercedes W221 Radio Control Operating Unit Card Reader CD Player A2219002802

€360.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. A2078200075

Antenna Mercedes W212 Keyless Go Comfort Access Antenna Module Unit A2078200075

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9167202

BMW E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit 9167202

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 95910-1H050

Kia Ceed Hyundai Air Module Safety Control Unit Ver. 3.3 ECU 95910-1H050

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8R0971036E

Audi Q5 8R Front Door Wiring Harness Cable Loom Passenger Side 8R0971036E

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CPLA-19H422-AC

Range Rover L405 Front Bumper 360 Camera Control Unit CPLA-19H422-AC

€132.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. AH42-15K603-AA-1

Range Rover Sport L494 Aerial Antenna Module Keyless Unit X2 AH42-15K603-AA

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2465450840

Mercedes GLA 250 X156 Battery Holder Bracket Support Batteries Box A2465450840

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2205401124-1

Fuse Box Unit Mercedes CL S C215 W220 1 Front Right O/S ECU A2205401124

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6519007500-13

Mercedes W212 E250 CDI 651.924 204HP Engine Unit ECU Kit A6519007500 Key Lock

€313.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9496820

Crash Sensor BMW G20 G26 G80 Front Door Left Right N/O/S Air Impact Unit 9496820

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7P0971225C

VW Touareg 7P Porsche Cayenne 92A Negative Battery Cable Wiring Loom 7P0971225C

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2208300272

Mercedes W203 C209 W211 W220 Light Solar Sun Sensor Module A2208300272

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0907361C-1

Seat Ibiza Mk4 Audi A3 8V TT FV Fuse Box Control Module Relay Box 5Q0907361C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055403335

Mercedes W205 C253 X253 Footwell Light Wiring Cable Front Left N/S A2055403335

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8U0971693D

Audi RSQ3 8U Door Wiring Harness Loom Rear Left Right N/O/S 8U0971693D

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1775401758

Mercedes W118 W177 W247 Starter Alternator Wiring Loom Harness Cable A1775401758

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0035063A

Audi A6 C8 Central Media Unit Head Unit Navigation Control MIB2+ HIGH 4K0035063A

€351.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8654463

Mini One F56 Petrol B38 102HP Engine Control Unit Module ECU DME 8654463 Manual

€151.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7H42-11001-AC

Land Rover Range Rover L322 Starter Motor 3.6 4.4 TD V8 Diesel 7H42-11001-AC

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

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