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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Inverter Wiring BMW F45 Mini F60 Hybrid High Voltage Battery Cable Loom 6824129

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 2Q0915181

Audi Polo Mk6 Battery Negative Minus Battery Monitoring Sensor 2Q0915181

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5P0035186B

Seat Altea Multimedia Radio CD Player Head Unit Controller 5P0035186B

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. K8D2-10723-AC

Range Rover Evoque L551 Battery Tray Holder Mount Support K8D2-10723-AC

€28.95

Free delivery: Sep 14 – 16

If paid before 14:00

Part no. A2535401001

Battery Cable Mercedes C238 C253 Starter Alternator Wiring Harness A2535401001

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0025463141

Mercedes A209 C209 Line Connector Terminal Point Positive Lead Fuse A0025463141

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9380945

Mini Cooper F55 F56 F60 HSD line HU - CID 9380945

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8582280-12

BMW F20 F21 116d N47N 117HP Engine Control ECU Kit DDE 8582280 Manual

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 2K5971691A

Volkswagen Caddy 2K Sliding Door Wiring Loom Harness Cable Left N/S 2K5971691A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2048207885

Mercedes-Benz C-Class W204 Rear Right Door O/S Control Unit Module A2048207885

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5K0907115K

Volkswagen Golf 5k Engine Control ECU 2.0 Petrol 235 HP 5K0907115K Automatic KIT

€759.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03L906018KP-1

Audi TT 8J CFGB 2.0 TDI Quattro 170HP Engine ECU Kit 03L906018KP Automatic

€123.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. GK21-13C148-AA

Ford Transit Custom Headlight Control Module ECU GK21-13C148-AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6957913

BMW Z4 E85 Fuse Box Modue Unit Bracket Mount Holder Retainer Support 6957913

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0971641E

Audi A8 D4 Centre Console Wiring Loom Cable Harness 4H0971641E

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9337183

BMW F32 Boot Trunk Tailgate Wiring Loom Harness Cable Wire 9337183

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2074405734

Mercedes W207 Wiring Loom Harness Cable A2074405734

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5H32-5E487-BC

Range Rover Sport L320 Anti Roll Suspension Valve Block 5H32-5E487-BC

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9361654

Radio Player Mini F55 F56 CD Bluetooth DAB Control Unit Module 9361654

€118.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9119578-1

BMW Z4 E85 E86 Antenna Amplifier Rod Antenna Control Unit Module 9119578

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BENZB2007005

Mercedes W169 W245 Hizpo Head Unit Navigation Multimedia Screen 7" GPS Android

€189.95

Free delivery: Sep 14 – 16

If paid before 14:00

Part no. 8E0907559H

Audi A4 B7 3.2 FSI Quattro AUK 255HP Engine Control Unit ECU 8E0907559H Manual

€208.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K0941824D

Audi Volkswagen Fuse Box Connector Socket Module Unit 8K0941824D

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 059911024E

Audi Q7 4L VW Touareg MK2 3.0 TDI Diesel Starter Motor 059911024E

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BK3T-14B446-HC

Ford Transit Mk8 Slam Panel Sensor Cable Wire Harness Cable Front BK3T-14B446-HC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7799856

BMW E60 E90 M57N2 231HP Engine Control Unit DDE 7799856 Manual

€132.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0906259N-1

Audi A5 F5 45 TFSI DKNA 245HP Quattro Engine ECU Kit 8W0906259N Gateway + Key

€351.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q0971230FA

Audi S3 8V Alternator Wiring Harness Set Three Phase 5Q0971230FA

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9855653

BMW F40 F74 F78 Power Distribution Box Mount Bracket Holder 9855653

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2579006600

Mercedes C118 W167 W177 W205 W213 C238 Communication Module Unit A2579006600

€222.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6519003203-2

Mercedes W906 313 CDI OM651.955 129HP Engine ECU Kit A6519003203 Automatic

€389.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8T0035570

Audi A6 C6 Interference Disturbance Suppressor Filter Module 8T0035570

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8P0035464

Audi A3 S3 8P Audio Amplifier Mount Bracket Holder Right O/S 8P0035464

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9200944

BMW 3 X1 E84 E91 Ultra Sonic Burglar Alarm System Sensor Module 9200944

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8R0971502A

Audi Q5 8R Battery Fuse Box Terminal Retaining Mount Bracket Holder 8R0971502A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. YMM501394A

Range Rover Sport L320 Rear Door Wiring Harness Cable YMM501394A

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5M51-12A650-MB

Ford Focus Mk2 Engine Control Unit 136HP ECU KIT 2.0 TDCI 5M51-12A650-MB

€189.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6519007401

Mercedes W212 E250CDI Blue Efficiency OM651 204HP Engine Module ECU A6519007401

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BJ32-14B526-AG

Land Rover Discovery Sport L550 Voltage Quality Module ECU BJ32-14B526-AG

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2115454840

Mercedes E-Class S211 W211 Battery Tray Holder Mounting Bracket A2115454840

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6G9T-14A631-DD

Ford Mondeo Mk4 Rear Door Wiring Loom Harness Cable Right O/S 6G9T-14A631-DD

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2649000700-5

Mercedes W205 C 200 264915 197HP Engine Control ECU Module A2649000700 Automatic

€246.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. Q10930041-0200

Seat Ibiza 6J Navigation Display 9" Screen Touch Screen Android Q10930041

€165.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03C906027BA

VW Golf Scirocco Engine Jetta Control Unit Module ECU 1.4 TSI 160HP 03C906027BA

€137.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1K0035198C-1

Volkswagen Eos 1F Radio CD Navigation Control Unit Module 1K0035198C

€61.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3B0035711B

Seat Leon Mk3 5F Hands Free Microphone Module Speaker Wiring Loom 3B0035711B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6519007500-28

Mercedes C207 E220CDI Engine Unit ECU 170HP 2.1 Diesel Automatic A6519007500 KIT

€170.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8H1971035CN

Audi A4 B7 Convertible Front Driver Side Door Wiring Harness 8H1971035CN

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. LHD-R56-CARPLAY-1

Mini R56 R55 R57 Sat Nav Head Unit Radio Player CarPlay Android Auto LHD

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8707752

BMW F20 F32 FEM Control Module Unit ECU 8707752

€203.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8621500

BMW F20 F21 F30 LCI Petrol N13 N20 Cable Alternator Starter Base B+ 8621500

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. EU5T-14A094-BA

Ford Ranger Mk3 Battery Power Fuse Box Terminal Engine Bay EU5T14A094BA

€23.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. A4159066300

Mercedes W415 Starter Motor Diesel 607951 A4159066300

€47.95

Free delivery: Sep 14 – 16

If paid before 14:00

Part no. 5A4A7B1

BMW G20 G21 LCI Rear Door Wiring Loom Harness Cable Left Right N/O/S 5A4A7B1

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2198200326

Door Module Mercedes C219 Rear Door Right O/S Control Module A2198200326

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 80A035225Q

Audi Q5 Mk2 FY Aerial Antenna Amplifier Module Unit 80A035225Q

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 2753031

Mini Wiring Loom Harness Cable Plug Connector Socket Input 2753031

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6928945

BMW X3 Series E83 E83 LCI B Terminal Point Luggage Compartment 6928945

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6821408

High Voltage Cable BMW F45 Mini F60 Harness Wiring 6821408

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q0959592M

Audi Q2 GA Door Module Control Unit Front Passenger Side 5Q0959592M

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1668200075

Mercedes W205 Aerial Antenna Control Unit Keyless Go Entry A1668200075

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. R8D2-14633-EAA

Range Rover Evoque L551 Door Wiring Harness Loom Rear Left N/S R8D2-14633-EAA

€108.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8644475

BMW Mini Cooper F55 F56 F57 Integrated Supply Module Z11 8644475 12638644475

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 284B13867R

Mercedes Citan W415 Renault Kangoo BCM Body Control Module Unit ECU 284B13867R

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. KV6T-11000-BC

Ford Transit Connect Starter Motor Engine 1.5 TDCI Diesel KV6T-11000-BC

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6H52-18C808-AG

Land Rover Freelander 2 L359 Premium Audio Amplifier Module 6H52-18C808-AG

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9287265

BMW F10 M5 Active Sound Unit Control Module Design Amplifier 9287265

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6842527

BMW G20 Battery Terminal Voltage Distribution Box 400W MID 6842527

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6G9T-14C507-CB

Ford Mondeo MK4 S-Max MK1 Rear Boot Fuse Box Cover Lid Grey 6G9T-14C507-CB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2198200164-1

Mercedes C219 Rear Lamp Left N/S Tail Light Taillight Loom Harness A2198200164

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3D0919473

Volkswagen Touareg 7L PDC Parking Aid System Display Panel Unit 3D0919473

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3T0907115G

Skoda Octavia Mk2 1.8 TFSI CDAA 160HP Engine Unit ECU Kit 3T0907115G Automatic

€208.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7300268-2

Rear Lamp BMW F01 F02 LCI Saloon Light Side Panel Right O/S Harness Wire 7300268

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. KG9T-14631-DHE

Ford Mondeo Mk5 Front Door Wiring Harness Loom Cable Left N/S KG9T-14631-DHE

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8516753-1

BMW F01 730d F07 530d N57 245HP Engine Unit ECU Kit DDE 8516753 Automatic

€180.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 99661822100

Porsche Boxter 986 Crash Impact Sensor Module 99661822100

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9261095

BMW 7 Series F01 F02 LCI Antenna Aerial Noise Suppression Filter 9261095

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8519005-2

BMW X1 E84 18dX Diesel N47N 143HP Engine Unit ECU DDE 8519005 Automatic

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1718200004

Mercedes R171 Wiring Harness Loom Cable Ventilation Driver Side A1718200004

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BATTERY-CABLE

Ford Fiesta Mk7 Positive Battery Terminal Cable Wire Wiring Loom

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DPLA-70718-NR

Land Rover Discovery Sport L550 Telematics Control Module Unit DPLA-70718-NR

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8F0907461

Audi A5 8F Central Convenience Module ECU Mounting Bracket Holder 8F0907461

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8H1971029AL

Audi A4 B7 Convertible Front Driver Side Door Wiring Harness Cable 8H1971029AL

€85.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K0907539

Audi A5 S5 8T Dashboard Sunlight Solar Sun Sensor 8K0907539

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8599189

BMW G11 740d B57 xDrive 320HP Engine Control Module ECU DDE 8599189 Automatic

€256.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9353270

BMW G11 G12 Trunk Bracket Holder Audio Boot Amplifier Mounting Mount 9353270

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4M0941824AP

Audi Q7 4M Fuse Box Power Distribution Unit Control Module 4M0941824AP

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6G9N-11000-FA

Starter Motor Ford Galaxy Mondeo S-Max TDCi Diesel Engine Starter 6G9N-11000-FA

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 070903143C

Volkswagen Touareg 7L Alternator Mounting Bracket Carrier Holder 070903143C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8U0907468G

Audi Q3 8U Gateway Interface Control Module Unit ECU 8U0907468G

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. FK72-14B006-AA

Land Rover Discovery L550 Front Impact Sensor Left Right N/O/S FK72-14B006-AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DMH-A240BT

Pioneer DMH-A240BT CD DVD iPhone Bluetooth Audio Player Head Unit Touchscreen

€279.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. LR015874

Land Rover Discovery 4 Driver's Seat Memory Wiring Loom Harness AH22-14B719-CC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2535405429

Mercedes C253 OM656 Diesel Engine Motor Wiring Loom Cable Harness A2535405429

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AW93-14F641-AE

Land Rover Discovery 4 L319 L538 L405 TV Tuner Hybrid Module AW93-14F641-AE

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8T0971369A

Audi A4 B8 Lumbar Support Wire Harness Wiring Cable Front Right O/S 8T0971369A

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5E0035842A

Skoda Octavia 5E MMI Multimedia Interface Unit Module Control ECU 5E0035842A

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03L906018GF-1

Volkswagen Scirocco Mk3 2.0 TDI 140HP CFHC Engine ECU Kit BCM 2 Key 03L906018GF

€256.95

Free delivery: Sep 15 – 16

If paid before 14:00

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