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 F20 F21 F30 F31 Air Module Control Unit ECU Controller 6826983 0 285 013 626

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9227179

BMW 1 Series E81 Body Control Module ECU L2 PL2RR JBBFE Junction Box 9227179

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0971230CA

Audi A3 8V VW Golf Mk7 Alternator Wire Harness Loom Wiring 5Q0971230CA

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8510221

BMW E90 E91 LCI E92 330d Diesel N57 Engine Control Unit DDE 8510221 Automatic

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4E0035225BK

Audi A8 D3 Aerial Amplifier Digital Radio Reception Module Right O/S 4E0035225BK

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9166542

BMW E92 HDD Navigation Reader System Module Unit ZB CE3 Navi JAPAN 9166542

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9260917

BMW E81 E82 Door Wiring Loom Harness Cables Passenger Side 9260917

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. F1B1-12A650-AJB

Ford Fiesta Mk7 1.0 EcoBoost 140HP Engine Control Unit ECU F1B1-12A650-AJB

€75.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5M5T14B192AA-1

Ford Transit Custom Mk8 Relay 4-Pin Black 12V 20A SET X2 5M5T-14B192-AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. AV1T-14A584-DDD

Ford B-Max Mk1 Front Door Loom Wiring Harness Cable Left N/S AV1T-14A584-DDD

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0907063AC

Audi A5 8T Onboard Comfort Supply Control Module Unit ECU 8K0907063AC

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6943525

BMW E90 E91 E92 E93 Wiring Loom Cable Harness 6943525

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8T0907468AB

Audi A4 B8 2.0 TDI CAGA Gateway Interface Control Module Unit ECU 8T0907468H

€23.95

Free delivery: Sep 23 – 24

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Part no. 8T0959793F

Door Module Audi A5 8T A4 B8 Control Front Right O/S Unit 8T0959793F

€23.95

Free delivery: Sep 23 – 24

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Part no. 0332019151-1

Porsche Cayman 987 Kia Sportage Fuel Pump Multifunction Relay Set 0332019151

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. AH22-12A610-GA

Land Rover Sport L320 Engine Wiring Bracket Holder Carrier AH22-12A610-GA

€23.95

Free delivery: Sep 23 – 24

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Part no. FK72-14A577-CD

Land Rover Discovery L550 Seat Wiring Loom Rear Left N/S 2nd Row FK72-14A577-CD

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0959595N

Audi A4 B9 Door Module Rear Right Left N/O/S Control Unit 8W0959595N

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6925966-2

BMW X3 E83 LCi Rear Door Window Lifter Right O/S 6925966

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6C1T-14026-AC

Ford Transit Mk7 Lock Cable Wiring Tailgate Latch Rear Door Wiring 6C1T-14026-AC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0971663A

Audi A8 D4 Front Door Wiring Harness Loom Cable Left N/S 4H0971663A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8510221-2

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 8510221 CAS3 + Key

€199.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6938226-2

BMW 3 Series 2 E90 E91 LCI M3 Wiring Loom Rear Door Left Right 6938226

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6990089

BMW 6 X3 Series E63 E83 Radio Antenna Amplifier Suppression Filter

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2124406207

Negative Cable Mercedes W212 Battery Earth Wiring Loom A2124406207

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9259468

BMW X3 F25 Fuse Box Power Distribution Control Unit Box Rear 9259468

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6512012009

Alternator Support Bracket Mercedes W212 OM651 Belt Tensioner Holder A6512012009

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1636880035-1

Mercedes-Benz M-Class ML W163 1 Fuse Box Relay Lid Cover Trim A1636880035

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9289679

BMW X5 F15 X6 F16 Antenna Amplifier Control Unit Module 9289679

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1Q0945094C-1

Volkswagen Eos 1F Rear Tail Light Lamp Wiring Cable Inner Right O/S 1Q0945094C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2S6T-14A073-AC

Ford Transit Connect Fuse Box Power Distribution Junction Relay 2S6T-14A073-AC

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6461509372-1

Mercedes W204 C220CDI OM646.811 170HP Engine ECU Kit A6461509372 2 Keys Lock

€265.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2185408907

Mercedes CLS C218 Front Dashboard Console Wiring Loom Harness A2185408907

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. L8B2-19L300-PV

Range Rover Velar L560 Navigation Sat Nav Radio Head Unit L8B2-19L300-PV

€854.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 52234117

Vauxhall Movano C Battery Wiring Harness Cable Alternator 52234117

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469007314

Mercedes C117 X156 W166 Central Display Screen Multimedia Sat Nav A2469007314

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9423398

BMW X1 F48 X2 F39 B47 AdBlue SCR Control Unit Module ECU 9423398

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2045403850

Mercedes W204 SAM Fuse Prefuse Box Relay Control Unit A2045403850

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CPLA-11A059-AA

Range Rover L405 Starter Motor Heat Shield Plate Cover CPLA-11A059-AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4E0907289E

Audi A8 4E S8 D3 Comfort Unit Control Module 4E0907289E

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BJ32-971111-BB

Range Rover Evoque L538 Anti Theft Alarm Siren Wiring Cable BJ32-971111-BB

€28.95

Free delivery: Sep 23 – 24

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Part no. DH52-14A076-CA

Land Rover Freelander 2 L359 Fuse Box Relay Cover Cap DH52-14A076-CA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. DPLA-70722-AB

Land Rover Discovery Sport L550 Sim Card Reader Module Unit ECU DPLA-70722-AB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0906093F

A4 B9 35 TFSI Fuel Pump Sender Control Relay Module Unit ECU 8W0906093F

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. YWC500350

Land Rover Sport L320 Ultrasonic Alarm System Sensor Unit YWC500350

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9164350

BMW E63 E64 Negative Battery Cable Minus Pole IBS 9164350

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009009405

Mercedes C205 S205 W205 PDC Parking Assist Unit Control Module A0009009405

€104.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2990133

BMW X1 Series E84 Trunk Lid Retaining Bracket Rail Rear Left N/S 2990133

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. GK3T14401EWB

Ford Transit Mk8 VI Fuse Relay Box Unit 2.0 Diesel Engine GK3T14401EWB

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9231399

Camera Module BMW F01 F07 F10 F11 F12 Based Assist Systems Control Unit 9231399

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6800903

Mini R50 R52 R53 Steering Wheel Horn Switch Right O/S 6800903

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. EK2T-14B428-RB

Ford Transit Mk8 Bluetooth Multimedia Control Module Unit ECU EK2T-14B428-RB

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8574100-3

BMW X3 F25 30dX N57N 258HP Engine Control ECU Kit DDE 8574100 Automatic

€218.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2K5971692A

Volkswagen Caddy Maxi Mk4 Sliding Door Wiring Loom Harness Right O/S 2K5971692A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2479003216

Mercedes C118 W247 Head Unit Radio Sat Nav Navigation Control Unit A2479003216

€474.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6511598940

Mercedes W205 C253 Battery Harness Wire Holder Bracket Cable Duct A6511598940

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. LR087661

Land Rover Range Rover Evoque L538 Ignition Smart Key Remote 434 MHZ LR087661

€70.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0907530F

Volkswagen Touran 1T Central Gateway Module Control Unit Lear 1K0907530F

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K8971104S

Volkswagen Scirocco Mk3 Rear Number Plate Wiring Harness Cable Loom 1K8971104S

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q2971111AN

VW Volkswagen Golf Gtd Power Steering Rack Wiring Harness Loom Wire 5Q2971111AN

€118.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0959772

Volkswagen VW Touran 1T Seat Heating Control Unit Module ECU 1K0959772

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2239052400

Mercedes W177 W223 W247 Crash Impact Deployment Sensor Unit A2239052400

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5L0971161L

Skoda Yeti 5L Door Window Wire Harness Loom Cable Rear Left N/S 5L0971161L

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7P6971693A

Volkswagen Touareg 7P Door Harness Wiring Loom Rear Left Right N/O/S 7P6971693A

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8780797

BMW X3 G01 X4 G02 Battery Housing Battery Bracket Holder Box 8780797

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 282754515R

Smart Fortwo C453 Comfort Module Control Unit ECU 282754515R

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. GK2T-14B526-CC

Ford Tourneo Custom Power Stabilisation Voltage Control Module GK2T-14B526-CC

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2515450940

Mercedes W251 Fuse Box SAM Module Unit Bracket Carrier Holder A2515450940

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. DAN1328

Audi A1 8X DAN1328 Denso Alternator Generator 14V 140A 104211-8380

€85.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9204849

BMW X5 X6 Series E70 E71 Airbag Control Module ECU Unit 9204849

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3C0953549AB

Volkswagen Passat B6 Steering Wheel Position Sensor Control Unit 3C0953549AB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K5971693AJ

Audi A6 C8 Door Wiring Harness Loom Rear Left Right N/O/S 4K5971693AJ

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8574095-3

BMW F20 F21 F30 118d 318d Diesel N47N Engine ECU DDE 8574095 +Key +FEM Automatic

€222.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4E0035061D

Audi A8 D3 Radio Audio Sound Amplifier Tuner Harman Becker 4E0035061D

€189.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. YND500070

Land Rover Discovery 3 L319 Rear Lamp Socket Wire Right O/S 5H22-14N014-AA

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6519007600-1

Mercedes W176 A200CDI OM651.901 136HP Engine ECU Kit A6519007600 Automatic

€165.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 99761821001

Porsche 987C Alarm Anti Theft System Control Module Unit 99761821001

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8J0971036F

Audi TT Mk2 8J Door Wiring Harness Cable Loom Passenger Side 8J0971036D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. GK72-15B484-BB

Land Rover Discovery Sport L550 Rear Parking Sensor Wiring Loom GK72-15B484-BB

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8589141-6

BMW F20 F21 LCI B37 116ed 116HP Engine Unit ECU DDE Kit 8589141 Lock CAS4 Key

€583.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. AM5T-19A391-AA

Ford Transit Mk8 Bluetooth Micro Phone Module Speaker Wiring Loom AM5T-19A391-AA

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. N9D3-14D619-AA

Range Rover Velar L560 Door Control Unit Module ECU Rear Left N/S N9D3-14D619-AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2518701889

Antenna Amplifier Mercedes W164 W251 Aerial Control Unit Module A2518701889

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469005312

Mercedes X117 X156 W246 Relay Control Unit Module A2469005312

€75.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9260600

BMW F30 Interior Wiring Harness Cable Loom Plastic Plug Socket Connector 9260600

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7P0959655F

Porsche Cayenne 92A Air Module Control Module Unit ECU 7P0959655F

€89.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9367807-1

BMW X5 F15 Battery B+ Positive Terminal Point Engine Compartment 9367807

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2Q0959772

Volkswagen Polo Mk6 AW Seat Ibiza Mk5 Heated Seat Module Control Unit 2Q0959772

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. K8D2-14N178-AD

Range Rover Evoque L551 Battery Wiring Harness Cable 2.0 K8D2-14N178-AD

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9281714

BMW F83 Camera Kafas Front Windscreen Camera 9281714

€70.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CV1T-14B532-BF

Ford Fiesta Mk7 Door Module Control Unit Rear Left Right N/O/S CV1T-14B532-BF

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0937124A

Audi A4 B9 A5 F5 Q5 FY Fuse Box Control Module Relay Box 8W0937124A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6968036

BMW 1 Series E87 ECU Body Control Module Unit H2 PL2 JBBFE 6968036

€64.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G5971693

Audi A6 C7 4G Rear Door Card Harness Loom Cable Wiring Left N/S 4G5971693

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4E0035225BM

Audi A8 D3 Aerial Amplifier Digital Radio Reception Module Left N/S 4E0035225BM

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9247103

BMW X5 E70 Audio Sound Amplifier Booster HiFi Module 9247103

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7277002-2

BMW F25 Front Headlight Light Lamp Xenon Right O/S Wire Loom Harness 7217300

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 510971693J

Volkswagen Golf Sportsvan Door Harness Rear Left N/S Door Wiring Loom 510971693J

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CK52-14A073-AC-1

Range Rover L405 Fuse Relay Box Housing Diesel CK52-14A073-AC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

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