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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BMW E90 LCI Wiring Loom Front Door Cable Wiring Harness Driver's Side 9186571

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 6R0802717B

Seat Ibiza 6J Audi A1 8X Battery Tray Holder Mounting Bracket Cover 6R0802717B

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. GOLF-5K-SCREEN-4

VW Golf Mk5 Mk6 Passat B6 B7 Car Radio Display MMI Multimedia Touch Screen 7"

PLN 949.95

Free delivery: Jul 15

If paid before 14:00

Part no. A6511508300

Engine Wiring Mercedes W910 OM651.958 Diesel Harness Loom Cable A6511508300

PLN 569.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2319058100

Mercedes SLK R172 Roadster Antenna Amplifier Control Module A2/71 A2319058100

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 5F4035225B

Seat Leon Mk3 Antenna Amplifier Module FM Right O/S Aerial Booster 5F4035225B

PLN 189.95

Free delivery: Jul 15

If paid before 14:00

Part no. BV4T-18C939-DA

Ford Kuga Mk1 C394 Radio Stereo CD Player Head Unit Sony BV4T-18C939-DA

PLN 332.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8678974

Engine Cable BMW F40 X1 F48 Mini F55 F56 Injector Wiring Loom Harness 8678974

PLN 170.95

Free delivery: Jul 15

If paid before 14:00

Part no. 9296975

BMW X5 F15 Control Unit Bracket Boot Trunk Module Unit Mount Holder 9296975

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 04L907309B-4

Seat Leon 5F 1.6 TDI CLHA 105HP Engine Control Unit ECU Kit 04L907309B Manual

PLN 522.95

Free delivery: Jul 15

If paid before 14:00

Part no. CK52-14A067-BB-2

Range Rover Vogue L405 Fuse Relay Box Electrical Unit CK52-14A067-BB

PLN 208.95

Free delivery: Jul 15

If paid before 14:00

Part no. CPLA-19G490-AE

Range Rover L405 Camera Module Rear View Parking Camera Unit CPLA-19G490-AE

PLN 522.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8V4971036M

Audi A3 8V Door Trim Harness Wiring Wire Front Passenger Side 8V4971036M

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4K8971036F

Audi A6 C8 Door Card Wiring Loom Harness Cable Front Passenger Side 4K8971036F

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. LR028237

Range Rover Evoque L538 Occupancy Sensor Mat Front Pasenger Seat 8X23-14C288-AB

PLN 75.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8590019

BMW G30 G31 Engine Wiring Harness Supply Line Cable 530d B57 Diesel 8590019

PLN 379.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8513249-1

BMW X3 F25 Engine ECU Kit DDE CAS4 N47N 20dX 184HP Manual 8513249 Keys + Lock

PLN 949.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8K0941031D-2

Audi A4 B8 Headlight Headlamp Wiring Harness Cable Plug Left N/S 8K0941031D

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 9167202

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

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. A6395407809

Wiring Loom Mercedes W639 Vito Cable Sliding Door Rear Left N/S A6395407809

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. A2229003619

Mercedes W205 W213 W222 Radio Sat Nav Head Unit A2229003619

PLN 2,089.95

Free delivery: Jul 15

If paid before 14:00

Part no. A9075407312

Mercedes W907 Battery Fuse Box Positive Distribution Terminal A2479061803

PLN 474.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4G1919129

Audi A1 8X A4 B8 A6 C7 A7 4G TV Tuner Module Control Unit 4G1919129

PLN 332.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2469002603

Mercedes W176 W246 W166 Windscreen Windshield Rain Sensor Unit A2469002603

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8067511

BMW F98 Adapter Cable Wiring RBS Rear Axle 8067511

PLN 75.95

Free delivery: Jul 15

If paid before 14:00

Part no. 5A2D553

Audio Receiver BMW F40 G22 G30 G31 X3 G01 DAB ECE Control Unit Module 5A2D553

PLN 759.95

Free delivery: Jul 15

If paid before 14:00

Part no. 1K0907361B

Audi A3 Q3 8U Relay Plate Fuse Box Bracket Holder Housing Retainer 1K0907361B

PLN 61.95

Free delivery: Jul 15 – 16

If paid before 14:00

Part no. 8576333-8

BMW F20 F30 F32 xDrive N47N 163HP Engine Control ECU Kit DDE 8576333 Manual

PLN 712.95

Free delivery: Jul 15

If paid before 14:00

Part no. A6519007500-13

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

PLN 1,139.95

Free delivery: Jul 15

If paid before 14:00

Part no. F1ET-3C221-ABE

Ford Focus Mk3 Power Steering Rack Wiring Harness Connector Loom F1ET-3C221-ABE

PLN 66.95

Free delivery: Jul 15

If paid before 14:00

Part no. 5H0945207A-2

VW Golf GTI CD1 Tail Light Rear Lamp Socket Cable Plug Left N/S 5H0945207A

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 99761821001

Porsche 987C Alarm Anti Theft System Control Module Unit 99761821001

PLN 80.95

Free delivery: Jul 15

If paid before 14:00

Part no. BK2T-14A099-AA

Ford Transit Custom Battery Fuse Box Terminal Cover Wiring Shield BK2T-14A099-AA

PLN 51.95

Delivery: Jul 15

If paid before 14:00

Part no. A1779006715

Mercedes W177 Wireless Charger Centre Console Phone Charging Module A1779006715

PLN 379.95

Free delivery: Jul 15

If paid before 14:00

Part no. LR143644

Range Rover Evoque L551 Transmission Harness 2.0 Diesel M8D2-7C078-BB

PLN 279.95

Free delivery: Jul 15

If paid before 14:00

Part no. A1695400606

Mercedes-Benz A W169 Parktronic Parking Sensor Wiring Cable Rear PDC A1695400606

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. A6421506891

Mercedes W251 R320 CDI OM642.950 224HP Engine Module ECU A6421506891 Automatic

PLN 759.95

Free delivery: Jul 15

If paid before 14:00

Part no. 9380885

BMW 1 3 4 F20 F30 F32 Control Unit Air Conditioning A/C Module 9380885

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 9499002

BMW F20 F21 F22 F30 F31 F32 F36 Fuse Box Body Control Unit Module REM V2 9499002

PLN 284.95

Free delivery: Jul 15

If paid before 14:00

Part no. A1665400180

Mercedes W166 Fuse Box Relay Cover Shield Cap Trim A1665400180

PLN 56.95

Delivery: Jul 15

If paid before 14:00

Part no. A6519007401-11

Mercedes W212 E250 CDI Engine Control Module ECU 170 HP SET Manual A6519007401

PLN 759.95

Free delivery: Jul 15

If paid before 14:00

Part no. 9160557

BMW Z4 E60 E61 E63 E85 Air Module Control Unit Module ECU 9160557

PLN 123.95

Free delivery: Jul 15

If paid before 14:00

Part no. GR3T-18C847-CA

Ford Mustang Mk6 Antenna Amplifier Control Unit Module Controller GR3T-18C847-CA

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. 191906383C-1

Audi VW Volkswagen Seat Skoda Relay Unit Module 4 Pins 191906383C

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. A0009050254

Mercedes W212 Negative Battery Cable Terminal Wiring A0009050254

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 7P090755AF

Porsche Cayenne 92A VW Touareg 7P Air Suspension Module Control Unit 7P0907553AF

PLN 370.95

Free delivery: Jul 15

If paid before 14:00

Part no. LR024071

Range Rover L322 Car Ignition Key Remote Control 433.92MHZ LR024071 AH4215K601BF

PLN 341.95

Free delivery: Jul 15

If paid before 14:00

Part no. NAD101500

Land Rover Freelander TD4 Starter Motor Engine Actuator Diesel NAD101500

PLN 237.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2048707658

Mercedes W204 Radio Control Function Button Knob Controller Unit A2048707658

PLN 189.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2055407790

Mercedes W205 Battery Electric Wiring Harness A2055407790

PLN 113.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8573260-14

BMW F20 F21 114d Diesel N47N 95HP Engine Control ECU Kit DDE 8573260 Manual

PLN 759.95

Free delivery: Jul 15

If paid before 14:00

Part no. 3AF945093K-2

Volkswagen Passat B7 Rear Tail Light Left N/S Harness Loom Wire Cable 3AF945093K

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 7239175-1

BMW F30 F80 M3 Battery Cover Trunk Trim Panel Right Boot 7239175

PLN 80.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2129061703-2

Mercedes S212 Rear Tail Light Lamp Wiring Harness Outer Left N/S A2129061703

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 5A82A01

BMW G20 G21 G28 Side Indicator Control Module Unit Left N/S 5A82A01

PLN 379.95

Free delivery: Jul 15

If paid before 14:00

Part no. 7595179-1

BMW E81 E87 LCI E90 N43 170HP Engine Control ECU Kit DME 7595179 Manual

PLN 949.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8585933

Wiring Loom Harness BMW F20 F30 F36 LCI B47 Engine Gearbox Module 8585933

PLN 522.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8K5945096AC-1

Audi A4 B8 Rear Tail Light LED Wiring Harness Cable Plug Right O/S 8K5945096AC

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 03L906018JR

Audi A4 B8 2.0 TDI CJCB 136HP Engine Control Unit Module ECU 03L906018JR Manual

PLN 949.95

Free delivery: Jul 15

If paid before 14:00

Part no. 022906032BE

VW Touareg 7L 3.2 V6 Petrol 220HP Module ECU Control Unit 022906032BE Automatic

PLN 712.95

Free delivery: Jul 15

If paid before 14:00

Part no. HK52-15C859-AD

Land Range Rover Sport L494 PDC Parking Aid ECU Control Unit HK52-15C859-AD

PLN 80.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2059068501

Mercedes W205 Fuse Box Rear Relay Electrical Control Unit Box A2059068501

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4H0907101H

Audi A8 D4 Fuse Box Relay Mounting Board Holder 4H0907101H

PLN 75.95

Free delivery: Jul 15

If paid before 14:00

Part no. 7644747

BMW F10 F11 F30 Petrol N20 ECU DME Engine Control Unit Module 7644747 Manual

PLN 1,709.95

Free delivery: Jul 15

If paid before 14:00

Part no. 7254970

BMW E92 LCI Grille Trim Panel Chrome Frame Front Right O/S 7254970

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. CK52-14A067-BB

Land Rover Range Rover L405 Fuse Relay Box CK52-14A067-BB

PLN 189.95

Free delivery: Jul 15

If paid before 14:00

Part no. 7P6035552N

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Right O/S 7P6035552N

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8W8971687M

Audi A5 F5 Sportback Door Wiring Harness Loom Rear Left N/S 8W8971687M

PLN 189.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2128270128-IRS

Roof Antenna Mercedes W212 Shark Trim Panel Iridium Silver - 775 A2128270128

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. A4159007503

Mercedes Citan W415 Body Control Module Unit BCM ECU A4159007503 284B18276R

PLN 664.95

Free delivery: Jul 15

If paid before 14:00

Part no. 95B971687P

Porsche Macan 95B Rear Door Wiring Harness Loom Cable Left N/S 95B971687P

PLN 151.95

Free delivery: Jul 15

If paid before 14:00

Part no. 7848639

BMW F06 LCI F07 LCI F10 F11 LCI Steering Wheel Lane Change Control Unit 7848639

PLN 664.95

Free delivery: Jul 15

If paid before 14:00

Part no. 95561209201

Porsche Cayenne 955 9PA Starter Negative Minus Battery Cable Wiring 7L0971228F

PLN 180.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4H0907064CH

Volkswagen Touareg 7P BCM Body Comfort Module Control Unit 4H0907064CH

PLN 256.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8T8945096D-2

Audi A5 8T Tail Light Lamp Side Panel Rear Right O/S Harness Wire 8T8945096D

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 7789225

BMW E65 E66 730d M57N Diesel Cable Starter-Base B+ 7789225

PLN 66.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4L0971036K

Audi Q7 4L Door Wiring Loom Harness Wire Cable Front Right O/S 4L0971036K

PLN 99.95

Free delivery: Jul 15

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

PLN 1,139.95

Free delivery: Jul 15

If paid before 14:00

Part no. 03L906018KP

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

PLN 949.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8A6T-19G481-AAR

Ford Fiesta Mk7 ST Central Locking Keyless Entry Control Module 8A6T-19G481-AAR

PLN 203.95

Free delivery: Jul 15

If paid before 14:00

Part no. 5A07600

BMW F40 Heater Air Conditioning System Control Unit Module 5A075F7

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. 9284976

BMW F13 F12 F06 Dashboard Display Central Information Display Monitor 9284976

PLN 474.95

Free delivery: Jul 15

If paid before 14:00

Part no. 6C1T14A481CC

Ford Transit Mk7 Fuse Box Body Control Module ECU 6C1T14A481CC

PLN 284.95

Free delivery: Jul 15

If paid before 14:00

Part no. M8D2-14B673-AC

Range Rover Evoque L551 Tailgate Hands Free Control Module Unit M8D2-14B673-AC

PLN 270.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2139002817

Mercedes W177 W205 C257 Radar Sensor Front Control Unit Module A2139002817

PLN 712.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2128203589

Antenna Amplifier Mercedes W212 Aerial Module Rear Roof Frame Right A2128203589

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 7M0951253A

Audi VW Volkswagen Seat Relay Unit Module 4 Pins 7M0951253A

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 9309991

Diversity Antenna Amplifier Mini F57 Convertible DAB Module Unit 9309991

PLN 283.95

Free delivery: Jul 15

If paid before 14:00

Part no. 6C4971693E

VW Volkswagen Polo 6R Rear Door Harness Wiring Loom Cable Left N/S 6C4971693E

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 420035223C

Audi R8 42 Spyder Audio Amplifier System Unit Control Unit Module 420035223C

PLN 1,804.95

Free delivery: Jul 15

If paid before 14:00

Part no. 1K0971250CE

Volkswagen Jetta A6 Manual Gearbox Earth Line 1K0971250CE

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 5Q0971230BC

Audi A3 8V Battery Cable Starter Alternator Wiring Harness 5Q0971230BC

PLN 75.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4F9945093B-2

Audi A6 C6 A6 4F Rear Light Lamp Tailgate Left N/S Inner Harness Loom 4F9945093B

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 8W6945091N-1

Audi A5 F5 Rear Outer Taillight Lamp Wiring Loom Cable Left N/S 8W6945091N

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8V0906259J-2

Audi S3 8V 2.0TFSI DJHA 310HP Quattro Engine Control Kit 8V0906259J Automatic

PLN 1,234.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8602988

MINI F54 F55 F56 F57 F60 Cable Alternator Starter Wire 8602988

PLN 70.95

Free delivery: Jul 15

If paid before 14:00

Part no. 83A971036AB

Audi Q3 F3 Front Passenger Door Card Wiring Loom Harness 83A971036AB

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. A2469004313

Gearbox Module Mercedes W176 Automatic Transmission Unit ECU A2469004313

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. RQT500100

Land Rover Discovery L319 Suspension ECU Control Module 2.7 276DT RQT500100

PLN 417.95

Free delivery: Jul 15

If paid before 14:00

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