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 Evoque L538 Rain Sensor Module Control Unit CPLA-17D547-AD

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Audi A3 8P A5 8T Interior Phone Holder Tray Connection Station Unit 8P0051435HH

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Skoda Fabia 5J 1.2 CGPA 69HP Engine Control Unit Module ECU 03E906023Q Manual

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Free delivery: Nov 12 – 13

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Volkswagen Passat 3C B7 Tiguan 5N Audi Q3 8U Starter Motor 02M911024H

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-14D374-AC

Range Rover Evoque L538 Air Module Control Unit ECU BJ32-14D374-AC

€23.95

Free delivery: Nov 12 – 13

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Part no. LJG2500CB

Jaguar XK8 X100 Body Processor Module Control Unit LJG2500CB

€325.95

Free delivery: Nov 12 – 13

If paid before 14:00

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2 x Mini R57 Cabrio Convertible DWA Door Alarm System Control Module Set 3455306

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LJG2822AC

Jaguar XK8 X100 Fuse Box Engine Bay Fusebox 4.2 Petrol AJ8FT LJG-2822-AC

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3WA959594A

Audi S3 8Y Rear Door Control Unit Module ECU Passenger Side 3WA959594A

€32.95

Free delivery: Nov 12 – 13

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Part no. 5E6971104G

Skoda Octavia Mk4 NX Rear Bumper PDC Wiring Loom Harness 5E6971104G

€56.95

Free delivery: Nov 12 – 13

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Part no. 9252651

BMW 1 2 3 Series F20 F21 F22 F30 Radio Remote Control Receiver 868 MHZ 9252651

€23.95

Free delivery: Nov 12 – 13

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Part no. 9297118

BMW F23 Electric Alarm Siren System Control Unit 12V 9297118

€51.95

Free delivery: Nov 12 – 13

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Part no. JPLA-14B006-DA

Land Rover Range Rover Sport L494 Crash Impact Control Sensor JPLA-14B006-DA

€23.95

Free delivery: Nov 12 – 13

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Part no. 6940588

BMW 5 Series E60 E61 Alarm System Unit Ultra Sonic Module 6940588

€23.95

Free delivery: Nov 12 – 13

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Part no. A2229006007

Mercedes w205 SAM Comfort Control Module Unit A2229006007

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059005713

Door Module Mercedes W205 Front Left N/S Door Control Module Unit A2059005713

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Mini Cooper R60 R61 Antenna Aerial Diversity Trap Circuit 9185474

€23.95

Free delivery: Nov 12 – 13

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Part no. 8514293

BMW F15 Alternator Starter Motor Battery Cable Wiire Harness Loom B+ 8514293

€42.95

Free delivery: Nov 12 – 13

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Part no. 6H52-10E958

Land Rover Freelander 2 Display Screen Multimedia Navigation Sat 6H5210E958

€32.95

Free delivery: Nov 12 – 13

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Part no. G3GT17D547

Ford Transit Custom Mk1 Front Windscreen Rain Sensor Module G3GT-17D547

€23.95

Free delivery: Nov 12 – 13

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Part no. 7P5907553AG

Porsche Cayenne 92A Suspension Control Module Unit ECU 7P5907553AG

€246.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Mini EGS Control Unit Module ECU Programmed 5 Pins 1421295

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7T1T-14073-BB

Ford Transit Connect Mk1 Fuse Box Relay Control Module Unit 7T1T-14073-BB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9242523

BMW X5 E70 Footwell Light Control Module Unit 9242523

€175.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779005409

Door Module Mercedes C118 W177 H243 Front Right O/S Door Control A1779005409

€80.95

Free delivery: Nov 12 – 13

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Part no. 7435133-2

Mini Cooper F55 F56 F57 Tail Light Rear Lamp Left N/S Harness Wire Loom 7435133

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04E907309BL-1

VW Golf Mk7 5G 1.2 TFSI CYVA 86HP Engine Control Unit ECU Kit 04E907309A Manual

€222.95

Free delivery: Nov 12 – 13

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Part no. 8K0971687AG

Audi A4 B8 Door Harness Loom Cable Wire Rear Left N/S 8K0971687AG

€23.95

Free delivery: Nov 12 – 13

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Smart Fortwo C453 Sat Nav Control Unit Navigation Module Unit A4539009506

€23.95

Free delivery: Nov 12 – 13

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Ford Fiesta Mk8 ST Gearbox Earth Minus Wiring Harness Cable K1BT-14324-CB

€23.95

Free delivery: Nov 12 – 13

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Part no. A0045467540

Mercedes W204 W221 Distributor Box Block Control Unit Relay A0045467540

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7586940-1

BMW E90 E93 325i E60 LCI 525i N53 218HP ECU Kit DME CAS3 + Key 7586940 Automatic

€284.95

Free delivery: Nov 12 – 13

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Part no. 6910719

BMW Z4 E85 E86 CD-Changer Bracket Left N/S Holder Mount Carrier 6910719

€23.95

Free delivery: Nov 12 – 13

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Part no. 6937465-3

BMW E92 E93 Front Bumper Fog Lights Light Lamp Wiring Cable Left N/S 6937465

€23.95

Free delivery: Nov 12 – 13

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Part no. 95B959655E

Porsche Macan 95B SRS Air Module Control Crash Unit ECU 95B959655E

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0971562E

Audi A6 C7 Front Door Wiring Loom Harness Cable Right O/S Side 4E0971562E

€42.95

Free delivery: Nov 12 – 13

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Part no. 06E903016D

Audi A6 C6 Alternator Generator Unit 2.0 TFSI Petrol Engine 06E903016D

€42.95

Free delivery: Nov 12 – 13

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Part no. 8V4971036M

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

€23.95

Free delivery: Nov 12 – 13

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Part no. 04E906027CL

VW Golf Mk7 Audi Q3 8U 1.4TSI CHPB 150HP Engine Unit ECU 04E906027CL Automatic

€218.95

Free delivery: Nov 12 – 13

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Part no. 8J0907376B

Audi TT 8J Suspension Damper Module Control Unit 8J0907376B

€23.95

Free delivery: Nov 12 – 13

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Part no. 6949228

Mini Cooper R52 Cabrio Convertible DWA Door Alarm System Module Unit 6949228

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059068501-1

Fuse Box Mercedes W205 S205 W213 Fuse Box Front Relay Control Module A2059068501

€28.95

Free delivery: Nov 12 – 13

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Part no. 03L906018JM-2

Audi Q5 8R 2.0 TDI CGLC Quattro 177HP Engine ECU Kit Lock Key 03L906018JM Manual

€208.95

Free delivery: Nov 12 – 13

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Part no. 7516376

BMW E65 E66 E67 Electric Valve 735i 745i 735Li 745Li 745LiS 7516376

€23.95

Free delivery: Nov 12 – 13

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Part no. DAN1110

Range Rover Sport L405 Alternator 4.4 SDV8 Diesel Denso DAN1110

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV6Q6M0

Ford Transit Connect Mk2 Glow Plug Wiring Harness Engine AV6Q6M0

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0971384K

Audi Q7 4L Seat Frame Wiring Harness Loom Wire Front Right O/S 4L0971384K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7540369

BMW E46 N46 Wiring Harness Engine Gearbox Module Loom Cable 7540369

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1635450440

Mercedes-Benz M-Class ML W163 Holder Bracket Engine Control Unit A1635450440

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7634056

Engine Wiring BMW F20 F21 F30 F31 N20 Cable Loom Harness 7634056

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779005109

Door Module Mercedes C118 W177 H243 Front Left N/S Door Control A1779005409

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9243667

BMW X3 F25 X4 F26 Rear Door Left Right N/O/S Wiring Loom Cables Harness 9243667

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2215420417-MB

Parking Sensor Mercedes W169 W204 W212 PDC Sensor Front Mountain Gray 787

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K907425B-16

VW Golf VII 2.0 TFSI DJHA 310HP Quattro Engine Unit ECU Kit 06K907425B Automatic

€208.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GN15-14C676-AA

Volkswagen Amarok MK2 Impact Sensor Front Left Right N/O/S Door GN15-14C676-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CX23-18K891-CB

Land Rover Discovery Sport L550 Aerial Antenna Amplifier Unit CX23-18K891-CB

€28.95

Free delivery: Nov 12 – 13

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Part no. 9259469

BMW X3 F25 Fuse Box Power Distribution Control Unit Module Rear 9259469

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR012640

Land Range Rover Sport L494 Oil Temperature Level Sensor Module 8W93-6C624-BG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. Q0010020V001-2

Smart W452 Roadster M160.922 0.7 82HP Engine ECU Automatic Q0010020V001

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6934096

BMW 7 Series E65 Cable Harness Door Rear Right Left N/O/S Wiring Loom 6923713

€23.95

Free delivery: Nov 12 – 13

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Part no. 9X23-14D374-AD

Jaguar XF X250 Restraints Control Unit Module ECU 9X23-14D374-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971030AD

Audi A4 B8 Door Wiring Harness Cable Loom Front Passenger Side 8K0971030AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7M5T-18C815-BA

Ford Transit Connect Mk1 Focus Mk2 CD Player Radio Stereo Unit 7M5T-18C815-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8603352-8

BMW F20 Engine Control Unit ECU Key 136HP 1.6 Petrol N13B16A Manual 8603352 Kit

€445.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9381101-1

BMW E90 LCI N47N 320d ed 163HP Engine Unit ECU KIT DDE FEM Key 8512047 Manual

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT-14K138-DDE

Ford Fiesta Mk7 Front Side Door Wiring Harness Loom Left N/S C1BT-14K138-DDE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H0907159D

Volkswagen Golf Mk8 GTI Impact Sound Control Unit Module 5H0907159D

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8576333-1

BMW F10 F11 520d X3 F25 20dX N47N 184HP ECU Kit DDE 8576333 Key CAS4 Automatic

€218.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8576484

BMW X3 G01 G20 G21 G30 G31 Starter Acoustic Vibration Plug 8576484 8588900

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9143270

Mini Cooper One R50 R53 Loudspeaker Rear 65136801101 6801101

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7510646

BMW 7 Series E65 E66 E67 Ventilation Hose E-Box Fan 7510646 12907510646

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479001709

Mercedes W907 Radio Control Unit ECU Module A2479001709

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009006920

Mercedes W205 W213 Battery Control Unit Charging Terminal Module A0009006920

€313.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DN1T-18B955-BA

Ford Fiesta Mk7 Multifunction Radio Clock Screen Display DN1T-18B955-BA

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6980089

BMW 5 Series E60 E61 Alarm System Unit Ultra Sonic Module 6980089

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959792E

Audi A4 B8 A5 8T Front Door Module Control Unit Module ECU Left N/S 8K0959792E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G0959354

VW Volkswagen Golf Mk7 5G Front Crash Impact Sensor SRS Control Unit 5G0959354

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0038207926

Door Module Mercedes W221 Door Control Unit Module A0038207926

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9354290-1

BMW X1 F48 Pedestrian Protection Impact Crash Sensor Module PTS 9354290

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K907425B-15

Audi S3 8V 2.0 TFSI DJHA 310HP Quattro Engine Unit ECU Kit 06K907425B Automatic

€360.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5Q0971230CA

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

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8510221

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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

€37.95

Free delivery: Nov 12 – 13

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Part no. 9166542

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

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 038971782C

VW Passat B6 Audi A3 8P Glow Plug Rail Bridge Wiring Loom Harness 038971782C

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907063AC

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

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0035666Q

Audi A8 D4 Multimedia Radio Audio Control Module 4H0035666Q

€208.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8969005040

Toyota Avensis T270 Power Management ECU Control Module 1.8 Petrol 8969005040

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1454407

Ford Ranger Mk4 Additional Fuse Box Cover Lid Top Housing 6M34-14A076-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. 8T0907468AB

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0959793F

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

€23.95

Free delivery: Nov 12 – 13

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Part no. LR060166-1

Land Rover Discovery 4 Air Suspension Compressor Wiring Cable CH22-12B654-AA

€28.95

Free delivery: Nov 12 – 13

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Porsche Cayman 987 Kia Sportage Fuel Pump Multifunction Relay Set 0332019151

€23.95

Free delivery: Nov 12 – 13

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Part no. AH22-12A610-GA

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

€23.95

Free delivery: Nov 12 – 13

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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: Nov 12 – 13

If paid before 14:00

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