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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Mini Clubman R55 Clubdoor Cable Wiring Loom Harness Set 9154133

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DT11-13C148-AC

Ford Transit Connect Headlight Control Unit Module ECU DT11-13C148-AC

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. K8D2-14A076-CA

Range Rover Evoque L551 Battery Fuse Box Cover Panel K8D2-14A076-CA

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 52233129

Vauxhall Movano C AdBlue Injection Wiring Harness Cable 2.2 BlueHDI 52233129

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C8971694DM

Volkswagen Passat CC Rear Door Wiring Harness Cable Right O/S 3C8971694DM

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 259152334R

Smart Fortwo Forfour 453 Sat Nav Multi Media Display Screen 259152334R

€279.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1639320314

Mercedes W163 Fuel Tank Filler Flap Cover Cap A1639320314

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. JU5T-15604-CFM

Ford Mondeo MK5 Body Control Module BCM Fuse Box Control Unit JU5T-15604-CFM

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6951855

BMW 6 E64 E64N LCI Convertible Suppression Filter Aerial Module Antenna 6951855

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4E0941817B

Audi A6 A8 D4 Q7 4M CAN Bus Jumper Contact Bridge Connector Plug 4E0941817B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5WA915343B

Battery Bracket VW Golf 8 CD1 Audi A3 8Y Battery Clamp Holder 5WA915343B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055409240

Mercedes W205 Front Door Electric Wiring Harness Loom Cable Left N/S A2055409240

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. P1WA-7P238-GA

VW Amarok Mk2 Transfer Case Box Control Unit Module ECU ECU P1WA-7P238-GA

€222.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T8971688S

Audi A5 S5 8T Door Wiring Loom Harness Cable Rear Right O/S 8T8971688S

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 99761010611

Porsce Cayman 987c Front Boot Module Control Unit ECU 99761010611

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055400555

Mercedes W205 Door Electrical Wiring Harness Front Left N/S A2055400555

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8652747-1

Mini Cooper R60 R61 ALL4 N18 1.6 122HP ECU DME Kit CAS3 2 Key 8611439 Automatic

€569.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G0971225K

Audi A6 C7 Positive Battery Cable Wiring Kit Harness Loom 4G0971225K

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L0971225H

Volkswagen Touareg 7L Audi Q7 4L Battery Positive Cable Terminal 7L0971225H

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR074182

Land Rover DISCOVERY SPORT L550 Rear Parking Sensor Wiring Harness GK7215B484EC

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8P0035186AB

Audi A3 8P Multimedia Radio CD Player Head Unit 8P0035186AB

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9224869

BMW F10 F11 F12 F13 Rear Bang&Olufsen Mid Range Speaker Left Right N/O/S 9224869

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W1959595

Audi Q5 FY Rear Door Control Module Unit Left Right N/O/S 8W1959595

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7555190

BMW F01 F02 F03 F10 F11 Control Module Housing Seal Frame Gasket 7555190

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06B911023A

Audi A4 B7 2.0 TFSI Starter Motor Engine Motor Actuator Petrol 03L911021E

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6872066

Mini F54 F60 Trailer Towing Control Module Cover Bracket Mounting 6872066

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V4971687H

Audi A3 8V Sportback Door Wiring Loom Harness Rear Left Right N/O/S 8V4971687H

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. E84-CIC

BMW X1 E84 CIC Display Screen 10.25" Multimedia Head Unit 4GB+64GB

€237.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V0906259J-2

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

€284.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2711504879-2

Mercedes W204 C180 271.952 156HP Engine Control Unit ECU A2711504879 Manual

€341.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6429005901

Mercedes W166 W204 W212 OM651 AdBlue Control Module Unit ECU A6429005901

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055400840

Mercedes W205 W238 Fuse Box Cover Control Unit Holder Bracket A2055400840

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9328591

BMW X6 F16 Boot Trunk Lid Tailgate Wiring Loom Harness Cable 9328591

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3G9945207J-1

VW Passat B8 Estate Rear Tail Light Wiring Harness Cable Left N/S 3G9945207J

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2048702126

Mercedes W204 Door Module Control Unit Module Front Right O/S A2048702126

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FK72-12C520-VB

Land Rover Discovery L550 2.2 224DT 190HP Engine ECU FK72-12C520-VB Automatic

€450.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 05L907309AH-1

Volkswagen Crafter SY 2.0 TDI 140HP Engine Control ECU Kit 05L907309AH Manual

€503.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8373700-1

BMW E60 E63 E87 E90 E91 2X Relay Make Contact White Green Set 8373700

€24.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9128569-1

BMW 1 Series E81 E82 E87 LCI E88 Wiring Harness Air Valve Air Flap 9128564

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7565300

BMW Z4 E85 2.0i N46 150HP Engine Control Unit ECU DME Manual 7565300

€118.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. HG9T-14A301-AB

Ford Mondeo Mk5 Hybrid Front Fuse Relay Junction Box Bracket HG9T-14A301-AB

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P6907530C

VW Volkswagen Touareg 7P MK2 Gateway Control Unit Module ECU 7P6907530C

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6974372

BMW 7 Series 7 E65 E66 E67 Ultra Sonic Module

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6925715

BMW 1 3 Series E81 E82 E87 E90 E91 E92 Positive Battery Terminal Cover 6925715

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L9971095C

Volkswagen Touareg 7L Front Bumper PDC Wiring Loom Harness 7L9971095C

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6429002900-4

Mercedes W204 C350 CDI OM642.830 Engine Module ECU Kit A6429002900 Key Lock

€503.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G0906093F

Audi A6 C7 Fuel Pump Control Unit Module 4G0906093F

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR044033

Range Rover L405 Electronic Radio Supression Module Passive Filtering LR044033

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 99965075040

Porsche 718 911 Boxster Cayman 987 Fuse Holder Fuse Box Module Part 99965075040

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9441776

Land Rover Range Rover L322 Battery Power Distribution Fuse Box 9441776

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0035225

Audi A8L 4H Aerial Antenna Amplifier AMP Booster Module 4H0035225

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2118702889

Mercedes W211 Radio Head Unit CD Audio Player Control Unit A2118702889

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8631671

BMW F20 F21 LCI Engine Gearbox Wiring Harness Transmission Module Wiring 8631671

€194.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 11080370000

Audi Q3 F3 Headlight LED Inner Module Unit Left N/S 11080370000

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1775405931

Mercedes W177 Engine Compartment Power Distribution Fuse Box Unit A1775405931

€99.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6938217

BMW 3 Series E90 E91 Wiring Loom Cable Front Door Left Passenger Side 6938217

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DPLA-2C491-AD

Range Rover L405 Electric Parking Handbrake Control Module DPLA-2C491-AD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6395406809

Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6395406809

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. M8A2-14C361-CB

Land Rover Range Rover Velar L560 Water Pump Wire Harness Loom M8A2-14C361-CB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6929555

BMW 7 Series E65 E66 E67 Sensor Front Left Door N/S 6929555

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3AA971230H

Volkswagen Passat B7 Battery Starter Alternator Wiring Loom 2.0 TDI 3AA971230H

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P5910568C

Porsche Cayenne Turbo 92A Lane Change Assistant Module Unit Right O/S 7P5910568C

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. JPLA-14D620-CB

Range Rover Evoque L551 Door Control Module ECU Rear Right O/S JPLA-14D620-CB

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9257102

BMW F01 F02 F03 F04 Front Seat Control Unit Module Memory 9257102

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055407942

Mercedes W205 Front Door Harness Wiring Cable Left Right N/O/S A2055407942

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 81A035192B

Audi A3 8V Radio CD SD SIM Player Stereo Sat Nav Head Unit 81A035192B

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0927710A

Audi A4 B8 A5 8T Steering Column Connector Plug 8K0927710A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0971035BD

Audi A5 S5 8T Front Driver Side Door Wiring Loom Harness Cable 8K0971035BD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AV1T-14A584-GCD

Ford B-MAX Door Loom Wiring Harness Rear Left N/S AV1T-14A584-GCD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6R0919433

VW Volkswagen Audi Seat Skoda Glow Plug Relay Unit Black 505 7 Pins 6R0919433

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CPLA-14D455-AF

Range Rover L405 Blind Spot Radar Sensor Module Control Unit CPLA-14D455-AF

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9356496

BMW F06 F12 F13 Dashboard Display Central SAT NAV Information Monitor 9356496

€213.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. EB3T-19C175-DA

Ford Ranger Mk3 Anetnna Aerial Amplifier Control Unit Module EB3T-19C175-DA

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CC1T-11000-BB

Ford Transit Mk8 Starter Motor Engine Actuator Diesel 2.2 TDCi CC1T-11000-BB

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7648785

BMW i3 i01 Battery Cell Module Supervision Circuit Control Unit 7648785

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9294309

Dashboard Monitor BMW X3 F25 X4 F26 Onboard Central Display Screen 6,5" 9294309

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. F60B-14A094-AA

Range Rover L322 Mega Fuse Connector Bracket F60B-14A094-AA

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8U0907468BA

Audi Q3 8U Gateway Control Module Unit ECU 8U0907468AQ

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. HK83-14D618-BB

Land Rover Discovery L550 Door Control Unit Module Driver's Side HK83-14D618-BB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8589158

Battery Cable BMW G01 G02 B47B B47D Alternator Base B+ Lead 8589158

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DPLA-15C859-DH

Land Rover Range Rover Evoque L538 Parking Control Module DPLA-15C859-DH

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. MXE-M350

Alpine 1 Channel Power Amplifier 12V Sound Amplifier Mxe-M350

€104.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7573701-7

Mini Cooper R55 R56 R57 N12 120HP Engine Control ECU Kit DME 7573701 Manual

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2475451001

Mercedes W177 Fuse Box Holder Bracket Support Mount Carrier A2475451001

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1J0973703

Audi A4 B7 Wire Harness Loom Cable Plug 3 Pin Connector 1J0973703

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7519051

BMW 7 Series E65 E66 E67 Electric valve 735i 745i 735Li 745Li 745LiS

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CK52-14A067-BB-1

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

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4475402105

Mercedes Vito W447 Battery Cable Starter Alternator Wiring Harness A4475402105

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR053998

Range Rover L405 Rear Bumper PDC Wiring Harness Cable DK52-15B484-AD

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2429007001

Mercedes W176 W204 W212 Telematics Communication Control Unit Module A2429007001

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6929554

BMW E65 E66 Door Air Module Sensor Control Unit Front Right O/S 6929554

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9320147

BMW F12 F13 Harman Becker Amplifier Top Module Control Unit 9320147

€788.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9894708

BMW F70 F74 U06 X1 U11 ECU Engine Holder Box Mount Support 9894708

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2118201526

Mercedes S211 Rear Door Control Module Left N/S A2118201526

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2465402205

Mercedes W246 Front Bumper Parking Sensor Parktronic Wiring Loom A2465402205

€108.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6261500075

Mercedes W205 Alternator Protective Cover Metal Sheet A6261500075

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1729006804

Mercedes SLK R172 Sat Nav CD Player Radio Head Unit A1729006804

€336.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5QS907530D

Volkswagen Crafter SY Gateway Control Module Unit 5QS907530D

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3Q0906121D

Skoda Karoq Crafter SY Transporter T6 Fuel Pump Control Unit 2.0 TDI 3Q0906121D

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

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