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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Range Rover L405 Touch Screen Display Control Panel CPLA-18A828-AC

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Part no. HJ32-14K016-BA

Land Rover Discovery Sport L550 Storage Fuse Box Schema Cover Cap HJ32-14K016-BA

€23.95

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BMW X3 F25 Footwell Light Module Control Unit FRMIII 9251979

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Audi A5 S5 F5 Door Card Panel LED Module Light Unit Front Right O/S 8W6947355D

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Audi A6 C8 A7 4K Electric Drive Earth Line Negative Cable 4K0971537

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Audi A1 8X Volkswagen Tiguan 5N Keyless Entry Control Module Unit 5K0959434E

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Land Rover Discovery 4 L319 Radiator Wiring Loom Harness AH22-14K011-AC

€23.95

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BMW F10 Front Seat Wiring Loom Electrical Cable Harness 9210923 9210922

€23.95

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Mercedes W204 W207 W221 Parking Sensor Display Control PDC A0015424723

€23.95

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Audi A5 S5 F5 Door Wiring Harness Rear Left Right N/O/S 8W8971693B 8W8971693C

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Ford Galaxy Mk2 Fuse Box Lid Cover Panel Housing 6G9T-14C507-AB

€23.95

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Part no. 8515491

BMW X3 F25 Battery Cable 30dX 35dX Wiring Alternator Starter Cable B+ 8515491

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BMW X5 SERIES E53 TV amplifier 8377658

€23.95

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Mercedes W164 W211 C219 Tyre Pressure Monitor Control Unit Module A1645400762

€28.95

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Mini Cooper One R50 R52 Battery Alternator Starter Cable Wiring 7515206

€23.95

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VW Golf Mk6 Audi TT 8J Parking Distance Control Sensor Shark Blue Metallic - A5Q

€23.95

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BMW Z4 Series E85 Roadster Battery Lead Positive Cable Plus Pole 6935667

€23.95

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Part no. L1TT14B006AA

Ford Transit Mk8 Fiesta Mk8 Crash Impact Sensor Air Module L1TT-14B006-AA

€23.95

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Battery Cable Mercedes GLC X253 Starter Motor Alternator Wiring A2055404797

€47.95

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VW Volkswagen Transporter T5 Engine Bay Fuse Box Relay Plate 2.5 TDI 7E0937503B

€23.95

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Audi A6 S6 C6 6-Disc CD Changer Magazine Head Unit MMI 4E0910110C

€32.95

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BMW Z4 E89 Light Footwell Control Module Unit 9308369

€42.95

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BMW E60 Dashboard Solar Receiver Sensor Plug Socket Wiring 6928369

€23.95

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Engine Wiring BMW F20 F30 F31 LCI B38 Loom Module 2 Harness Cable 8635808

€75.95

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Part no. 4H0919275-RES

Volkswagen Sharan 7N PDC Parking Distance Sensor Reflex Silver - A7W 4H0919275

€23.95

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€379.95

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Mercedes W211 Becker Audio Sound Amplifier Module A2118274142

€47.95

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Ford Transit Courier Dashboard Multimedia Display Screen Unit JT76-18B955-EC

€51.95

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BMW F20 F21 116d N47N 116HP ECU Kit DDE 8517874 + Key + FEM + Lock Manual

€218.95

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Audi A4 B9 Front Door Wiring Wire Loom Harness Driver's Side 8W0971029CF

€42.95

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BMW 5 7 Series F01 F02 F10 F11 Power Distribution Fuse Box Rear 9252813

€23.95

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BMW F01 F06 F12 F12 LCI Radio Remote Control Car Key 868 MHZ 5A57FC9

€47.95

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E-Box Fan BMW X5 E70 X6 E71 Sunon Cooler PSD1205PIBX-A 13.5V 7555185

€23.95

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Mini Cooper S F55 F56 Petrol Positive Battery Alternator Starter Cable 8654635

€23.95

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Audi S7 4G Remote Key Radio Alarm Key Fob Opener Button 4G0959754DD

€32.95

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BMW Z4 E85 E86 Tilt Sirene Speaker Alarm With Inclination Indicator 6942430

€23.95

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Mercedes W176 Battery Support Holder Bracket Mount A2466200028

€23.95

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Part no. A2135400414

Mercedes W213 C238 Fuse Box Relay Control Unit Module A2135400414

€56.95

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Skoda Octavia VRS Door Wiring Wire Harness Cable Loom Rear Right O/S 5E3971694AC

€42.95

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BMW F20 F30 LCI MINI F55 F56 Integrated Relay Supply Module 8600358

€23.95

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€51.95

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BMW F20 F21 Front Door Wiring Harness Cable Right O/S 9291954

€28.95

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Ultra Sonic Module Mini R50 R53 Alarm System Sensor 6915063

€23.95

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Part no. 6G9T-14C507-BB

Ford Galaxy Mk2 Fuse Box Lid Cover Panel Housing 6G9T-14C507-BB

€23.95

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Part no. 8R1035223A

Audi A4 B8 A5 8T Sound System Amplifier Control Module ECU 8R1035223A

€23.95

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Part no. A6429060900

Mercedes W204 W207 W212 W221 Starter Motor A6429060900

€37.95

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Part no. 6M5T-F221050-CA

Ford Kuga C394 Windscreen Washer Wiring Loom Harness Cable 6M5T-F221050-CA

€51.95

Free delivery: Sep 23 – 24

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Part no. 1487246

Mini R50 R52 R53 Engine Block Ping Knock Sensor Petrol 1487246

€23.95

Free delivery: Sep 23 – 24

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Part no. 5A374F9

BMW F40 Radio CD Player Head Unit Navigation Sat Nav CIC Alpine 5A374F9

€450.95

Free delivery: Sep 23 – 24

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Part no. A6519007401-11

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

€170.95

Free delivery: Sep 23 – 24

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Part no. 8736251

BMW X4M F98 X4 G02 X3 G01 Rear Fuse Box Power Distribution Fuse Box 8736251

€66.95

Free delivery: Sep 23 – 24

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Part no. 7P5971384AA

Porsche Cayenne S 92a Seat Wiring Harness Loom Cable Front Right O/S 7P5971384AA

€56.95

Free delivery: Sep 23 – 24

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Part no. A2129005101

Fuse Box Mercedes W212 Rear SAM Relay Fuse Box Control Module A2129005101

€32.95

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Part no. 1J0971839A

Audi A3 8L TT 8N Engine Bay Wiring Harness Loom Cable Guide Holder 1J0971839A

€23.95

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Vauxhall Movano C Electric Wire Harness Loom Cable Wiring Connector 46867282

€32.95

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Part no. N000000004325-1

Mercedes W169 W204 W211 C219 Replacement Fuse Kit Set N000000004325

€23.95

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Part no. V23136-B1001-X51

Land Rover Range Rover Evoque L538 4-Blade Relay 40A 12V V23136-B1001-X51

€28.95

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Mini F66 F67 Interior Wiring Loom Harness Cable 5A717D2

€56.95

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Part no. 8473185-7

Mini F56 Cooper SD B47 170HP Engine ECU Kit DDE 8473185 FEM 2 Keys Manual

€379.95

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BMW E60 E65 E70 Front Right Seat O/S Height Adjustment Drive 7075944

€23.95

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Part no. 03C906026J

Skoda Fabia Mk2 1.4 TSI 180HP Engine Control Unit ECU Kit 03C906026J Automatic

€213.95

Free delivery: Sep 23 – 24

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Part no. 059971627R

Audi S5 F5 A6 C8 Engine Wiring Harness Loom Harness 3.0 TDI DDVB 059971627R

€23.95

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Part no. ET7T18B955BB

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

€28.95

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Part no. 9282069

BMW 5 Series F10 F11 Cable Loom Front Driver's Door Wiring Harness 9255986

€23.95

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Part no. 8T0971029L

Audi A5 8T Front Door Wiring Harness Loom Wire Driver's Side 8T0971029L

€42.95

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BMW E65 E66 Light Module Control Unit Left N/S 6937229

€32.95

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Part no. A1185405713

Mercedes CLA C118 Rear Bumper PDC Wiring Parking Sensor Loom Harness A1185405713

€42.95

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Part no. 03L911024

Audi A4 B8 A5 8T Diesel 2.0 TDI Starter Motor Manual 03L911024

€23.95

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Part no. 5Q0971230BC

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

€23.95

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BMW X5 E70 X6 E71 Safety Control Unit Air Module Bag ECU Bosch 9189905

€23.95

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BMW 1 2 Series F20 F21 F30 Brake Disc Protection Plate Front Right O/S 6873418

€23.95

Free delivery: Sep 23 – 24

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Part no. 8578995-1

BMW F10 520d F20 320d N47N 184HP Engine Module Unit ECU DDE Kit 8578995 Key CAS4

€170.95

Free delivery: Sep 23 – 24

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BMW F20 F21 F30 F32 N55 Power Distribution Module Bracket Cover Carrier 8620771

€23.95

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Part no. YMC000610

Land Rover Freelander L314 Air Module Sensor Control Unit 8H22-14D374-AD

€42.95

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Part no. A1648207789

Mercedes W164 Aerial Antenna Amplifier A1648207789

€23.95

Free delivery: Sep 23 – 24

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Mini F54 Kafas Camera Control Module Unit ECU 9107381

€23.95

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Part no. A2515408635

Mercedes R320 W251 Positive Plus + Battery Wiring Harness Cable A2515408635

€23.95

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Part no. RK72-19C164-HA

Land Rover Range Rover Evoque L551 Sound Amplifier Module Unit RK72-19C164-HA

€142.95

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Range Rover Velar L560 Door Control Module ECU Rear Right O/S N9D3-14D620-AA

€89.95

Free delivery: Sep 23 – 24

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Mercedes C-Class W203 Roof Alarm Motion Sensor Cover Trim Grey A2038219751

€23.95

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BMW 3 X3 Series E46 E83 LCI Earth Cable Flow Electric Battery Negative 6919584

€23.95

Free delivery: Sep 23 – 24

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Part no. 8J0907115N-3

Audi TT 8J Engine ECU Ignition + Key Kit 2.0 TFSI BWA 200HP Automatic 8J0907115N

€180.95

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Part no. 7E0937545A

Volkswagen Transporter T5 Main Fuse Socket Connector Housing Bracket 7E0937545A

€23.95

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BMW X1 U11 High-Voltage Battery Module Connector Wiring Harness Cable 8844293

€51.95

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Porsche Cayenne 92A Amplifier Control Unit Module Mount Bracket 7P5035209

€23.95

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Mercedes W169 W245 Central Gateway Control Unit Module ECU A1695403945

€23.95

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Volkswagen Tiguan 5N Module BCM Body Control Unit Module ECU 3C0937049E

€70.95

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€23.95

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€23.95

Free delivery: Sep 23 – 24

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Part no. K1BT-14F642-AB

Ford Fiesta Mk8 Port Data Link Module OBD Smart Link Control Unit K1BT-14F642-AB

€23.95

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Part no. E1BT-14K012-PDB

Ford Fiesta Mk7 Engine Fuse Box Control Unit Module E1BT-14K012-PDB

€32.95

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Mercedes X253 Engine Wiring Harness Line Supply Line A2741504704

€113.95

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Volkswagen VW Golf Mk7 Audi A1 8X Alternator Generator 14V 110A 04E903015

€32.95

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Seat Module BMW E65 Front Seat Control Unit Module ECU 913463601

€32.95

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Audi A6 C8 Aerial AMP Antenna Amplifier Module Control Unit 4K5035225P

€28.95

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BMW X3 Series E83 Battery cable holder mounting parts B Base 8367769

€23.95

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Range Rover L405 Touch Screen Display Pad Left N/S CPLA-18C858-DC

€66.95

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Mercedes-Benz A B W176 W246 Glove Box Aerial Antenna Booster Amplifier

€23.95

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€66.95

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