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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VW Volkswagen Crafter Sy Starter Alternator Loom Harness Wire Cable 7C0971157K

€80.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1679009611

Mercedes W205 W213 X253 Door Module Rear Right O/S Control Unit ECU A1679009611

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9117833

Mini Cooper F55 F56 F57 IBS Negative Battery Lead Cable Wiring 9381445

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1685405008

Mercedes A-Class W168 Door Cable Harness Wiring Loom Front Right A1685405008

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 06E903016N-1

Audi A4 B8 A5 8T Alternator Generator 140A 14V 3.2 FSI Petrol Engine 06E903016N

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. VIBE-654

VIBE 65.4 Powerbox Micro Class D Amplifier Stereo Car Audio Booster 520W

€165.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AB39-18C815-MA

Ford Ranger Mk6 CD Radio Head Unit Stereo AB39-18C815-MA

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5F0945093M-2

Seat Leon Mk3 5F Tail Light Lamp Inner Rear Left N/S Wire Harness 5F0945093M

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8518166

BMW E82 E88 E93 120d 320d N47 177HP Engine Control Unit ECU DDE 8518166 Manual

€189.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8R0941030M-2

Audi Q5 8R Headlight Headlamp Lamp Light Wiring Cable Front Right O/S 8R0941030M

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2129001806

Mercedes A207 C207 SAM Control Unit Module Fuse Box Rear A2129001806

€142.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G0907347

Audi A6 C7 A7 Voltage Stabilaser Control Module Bracket Mount Carrier 4G0907347

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0971659B

Audi A4 B9 Dashboard Air Vent Wiring Loom Harnes Cable Passenger Side 8W0971659B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F0959794E

Audi A6 C6 Rear Door Right O/S Module Unit Control ECU 4F0959794E

€23.95

Free delivery: Sep 15 – 16

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Part no. 7N0959795D

Skoda Yeti 5L Rear Door Control Module Unit Left Right N/O/S 7N0959795D

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. H1BT-18C815-ZU

Ford Fiesta Mk8 Radio Audio Head Unit Sat Nav Module HIBT-18C815-ZU

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7290727

Battery Cover BMW X1 F48 X2 F39 Mini Countryman F60 Upper Panel 7290727

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0055461040

Energy Distributor Mercedes W204 W212 W906 Power Block Control Unit A0055461040

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0951253C-1

Volkswagen Polo 6R Tiguan 1T Multi Use Control Module Relay SET 4H0951253C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2749060400

Mercedes W204 W212 C207 M274 OM651 Starter Motor Engine Starter A2749060400

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9664738680-1

Peugeot 308 T7 1.6 5FW 120HP Engine Control Module ECU Kit 9664738680 Manual

€189.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9381114

BMW F20 F21 F30 F31 F32 Mini F56 F57 Seat Control Unit Module Heating 9381114

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9358311

Mini F56 Door Wire Wiring Loom Cable Harness Front Right O/S 9358262

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9384214

BMW F10 ECU Body Control Module V2 PL6 JBBFE III Junction Box 9384214

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. C1BT-15K868-AAE

Ford Fiesta Mk7 Rear PDC Parking Sensor Wiring Harness Loom C1BT-15K868-AAE

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7L0959655

Volkswagen Touareg 7L Air Module Control Unit Crash Impact Sensor 7L0959655

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W6971449B

Audi S5 F5 Door Wire Wiring Cable Loom Harness Rear Left Right N/O/S 8W6971449B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K0971030B

Audi A4 B8 Door Wiring Loom Cable Front Passenger Side 8K0971030B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. YQS000282

Land Rover Freelander L314 Under Bonnet Fuse Box Cover Lid Panel YQS000282

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8T0945096H-1

Audi A5 8T Rear Tail Light Lamp Wiring Harness Cable Plug Right O/S 8T0945096H

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7521582-2

BMW 3 X3 Z4 Series 2 E46 E83 E85 Engine Electronics Unit Box 7534922

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6M2J-19H378-AD

Ford Galaxy Mk2 Trailer Tow Control Module Towing Hook ECU Unit 6M2J-19H378-AD

€104.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9277202

Wiring Cable BMW F06 F12 F13 Electric Parking Hand Brake Handbrake Set 9277202

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2065406045

Mercedes W206 Rear Door Harness Cable Wiring Loom Left N/S A2065404116

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9389260

Mini F55 F56 F57 IBS Negative Battery Cable Lead Wiring Unit 9389260

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2117320225

Mercedes W211 Cable Duct Guide Housing Rear Right O/S A2117320225

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2218202910

Mercedes W221 Dashboard Instrument Cluster Panel Switch A2218202910

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8S0971365F

Audi TT FV Driver's Seat Cable Seat Belt Warning Wiring Loom Harness 8S0971365F

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8498443

Mini F66 BMW F70 Battery Positive Terminal Cover Cap Engine Compartment 8498443

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5A717E3

Mini Cooper F66 Seat Wiring Harness Cable Loom Connector 5A717E3

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4K0971238A

Audi A6 C8 A7 4K Negative Earth Minus Battery Cable Wire Harness 4K0971238A

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0959121G

Audi A5 F5 Pedestrian Protection Pressure Sensor 8W0959121G

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G5971030DJ

Audi A6 C7 Front Door Wiring Harness Loom Left N/S Passenger's Side 4G5971030DJ

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8617551-6

BMW F30 F31 F34 F36 N20 xDrive 184HP Engine Control ECU DME 8617551 Automatic

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1648200297

Mercedes GL X164 Tailgate Boot Rear View Camera A1648200297

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9335297

BMW F20 Door Wiring Loom Harness Cable Passenger Side 9335297

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7S7T-19G481-DB

Ford Mondeo Mk4 Central Door Locking Control Unit Module ECU 7S7T-19G481-DB

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G8959793G

Audi RS6 C7 Front Door Module Driver's Side Control Unit ECU 4G8959793G

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8Y0963554A

Audi S3 8Y Rear Seat Couch Occupancy Recognition Sensor Unit 8Y0963554A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2055402237

Mercedes W205 Battery Cable Elelctrical Wiring Harness Loom Hybrid A2055402237

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1775405801

Mercedes W177 W247 Door Wiring Rear Left Right Cable Harness A1775405801

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. GJ32-14D617-BA

Land Rover Discovery Sport L550 Door Module Front Passenger Side GJ32-14D617-BA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 059907282

Audi A6 C8 Q7 4M Glow Plug Relay Unit Control Module 3.0 TDI 059907282

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2465410205

Mercedes W176 W246 Battery Box Trim Housing Cover Support Panel A2465410205

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2056186100

Mercedes W205 W238 Rear Battery Holder Bracket Mount Strap Clamp A2056186100

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9M5Q-12A343-AA

Ford Mondeo Mk4 S-Max Galaxy Glow Plug Relay 2.0 TDCi Diesel 9M5Q-12A343-AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. CH22-14632-BB

Land Rover Discovery 4 L319 Rear Door Wiring Loom Harnes Right O/S CH22-14632-BB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. YWY000120

Range Rover Sport L320 Alarm Receiver Control Module YWY000120

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9350705

BMW X3 F25 Body Control Module ECU Junction Box JBBFE III V8 9350705

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1669005012

Mercedes W166 Front Door Module Left N/S Control Unit ECU A1669005012

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1688300072

Mercedes-Benz A-Class W168 Intake Temperature Sensor A1688300072

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8V4971035BF

Audi A3 8V Front Door Wiring Loom Harness Cable Driver Side O/S 8V4971035BF

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9195956-1

Mini Cooper R55 R56 R57 CCC Navigation Navi Sat Nav Head Unit 9195956

€222.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0907064EC

Audi A5 F5 BCM Body Comfort Module Onboard Control Unit ECU 8W0907064EC

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5A641B0

Mini F55 F66 F67 BMW F70 F74 G20 G21 LED Headlight Control Module ECU 5A641B0

€108.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6989112-ASB

BMW E60 E61 PDC Ultrasonic Parking Sensor Astro Black Metallic A25

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5E0907159

Skoda Octavia 5E Audi A8 D4 Impact Sound Control Module Unit ECU 5E0907159

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9149674

BMW 3 5 Series E60 E90 Portable DVD System Alarm Ultra Sonic Module Unit 6980090

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7586426

BMW E89 F10 F25 F26 Battery Clamp Bracket Holder 7586426

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2205404508

Mercedes W220 Door Wiring Harness Rear Left N/S Cable A2205404508

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. VW8-XY

Seat Leon 1P Mk2 Radio Player Multimedia Screen Bluetooth Android VW8-XY

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7P0907652C

Volkswagen Touareg 7P ESP Yaw Rate Sensor Module Unit Control ECU 7P0907652C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. FK72-14F041-AE

Land Rover Discovery Sport L550 Body Control Module BCM Unit FK72-14F041-AE

€85.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4K0971227H

Audi A6 C8 Battery Wiring Harness Earth Cable 3.0 TFSI 4K0971227H

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5A07600

BMW F40 Heater Air Conditioning System Control Unit Module 5A075F7

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. HK72-19H406-AB

Land Rover Discovery Sport L550 Front Windscreen Camera HK72-19H406-AB

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0005401869

Mercedes-Benz A208 C208 W208 W210 Battery Cable Box Connector A0005401869

€80.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7PP959663E

Porsche Cayenne 92A VW Touareg 7P Voltage Stabilizer Control Module 7PP959663E

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8T0971030A

Audi A5 8T Coupe Door Wiring Loom Connector Cable Passenger Side 8T0971030A

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3G9945208J-1

Volkswagen Passat B8 Tail Light Rear Lamp Outer Right O/S Wire Cable 3G9945208J

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3455304

Mini R57 Cabrio DWA Door Alarm Theft Deterrent System Unit 3455304

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9242204

Wiring BMW F12 F13 F06 Cable Set For Electric Parking Brake Handbrake 9242204

€80.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6968649

BMW E93 Convertible Aerial Antenna Amplifier FM/AM Left N/S 6968649

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. K8D2-14N166-AD

Range Rover Evoque L551 Battery Cable MHEV Battery Box Harness K8D2-14N166-AD

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3A0972695A

VW Scirocco Mk3 OBD Diagnostic Connector Wiring Loom 16 Pin Plug 3A0972695A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BS7T-18K931-AE

Ford Mondeo Mk4 Radio Stereo Head Unit CD Player Control Panel BS7T-18K931-AE

€256.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1669001814

Mercedes W166 SAM Body Control Unit Module Fuse Box A1669001814

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5A7F553

BMW G26 Reverse Rear View Camera 5A7F553

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1725408605

Mercedes SLK R172 Sun Visor Wiring Harness Cable Loom A1725408605

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2215407710

Mercedes W221 Battery Negative Terminal Cable Wiring Wire A2215407710

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5K7955559B

VW Volkswagen Caddy 2K Front Windscreen Rain Light Solar Sensor Unit 5K7955559B

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2215408045

TPM Module Mercedes W221 S500 C216 Tire Pressure System Module RDK A2215408045

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1694710141

Mercedes W169 W245 Fuel Pump Cable Harness Bracket Mount Trim A1694710141

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6956744-1

BMW E81 E82 E87 E88 E90 E91 Parking Sensor PDC Sydneyblau - A19 6956744 SET X2

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0915181E

Audi A5 F5 Negative Battery Cable Lead Monitoring Module 8W0915181E

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. GK2T-15K866-AC

Ford Transit Custom Parking Brake Handbrake Module Control Unit GK2T-15K866-AC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. ET7T-18B955-BA

Ford Fiesta Mk7 Dashboard Multifunction Display Screen Monitor ET7T-18B955-BA

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8512589

BMW E81 E82 E87 LCI E88 N47S 123d 204HP Engine Unit ECU Kit DDE 8512589 Manual

€341.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. JM5T14G370HNC

Ford Focus ST3 Mk3 Sat Nav Display Head Unit JM5T-14G370-HNC GM5T-18B955-SB

€332.95

Free delivery: Sep 15 – 16

If paid before 14:00

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