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

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Free delivery: Nov 12 – 13

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Free delivery: Nov 12 – 13

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Free delivery: Nov 12 – 13

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€113.95

Free delivery: Nov 12 – 13

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Part no. LK72-14A104-BA

Land Rover Discovery Sport L550 Air Con Module Wiring Loom A/C LK72-14A104-BA

€47.95

Free delivery: Nov 12 – 13

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BMW E92 ECU Engine Control Unit Module 3.0 306Hp Petrol Automatic 7526784

€32.95

Free delivery: Nov 12 – 13

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Part no. 4H0919275-PHB1

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€23.95

Free delivery: Nov 12 – 13

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

€23.95

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Audi S3 8Y Door Wiring Harness Loom Electric Wire Rear Left N/S 8Y0971687BG

€66.95

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Mini F54 F60 Trailer Towing Control Module Cover Bracket Mounting 6872066

€23.95

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Part no. 8V0906259J-2

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

€284.95

Free delivery: Nov 12 – 13

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Part no. A2711504879-2

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

€341.95

Free delivery: Nov 12 – 13

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Part no. A2055400840

Mercedes W205 W238 Fuse Box Cover Control Unit Holder Bracket A2055400840

€23.95

Free delivery: Nov 12 – 13

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Part no. 7M51-10A659-AB

Ford Focus Mk2 C-Max Mk1 Battery Tray Surround Cover Lid Top 7M51-10A659-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. 9328591

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

€28.95

Free delivery: Nov 12 – 13

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Part no. 3G9945207J-1

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048702126

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

€23.95

Free delivery: Nov 12 – 13

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Part no. FK72-12C520-VB

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

€450.95

Free delivery: Nov 12 – 13

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Part no. 05L907309AH-1

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

€503.95

Free delivery: Nov 12 – 13

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Part no. 8373700-1

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

€24.95

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Part no. 9128569-1

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

€23.95

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Mercedes W221 Dashboard Instrument Cluster Panel Button Switch A2218211251

€23.95

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Part no. HG9T-14A301-AB

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

€32.95

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Relay Mercedes W204 4-Pin Electrical Relay Black Hella 12V 4RA007813

€23.95

Free delivery: Nov 12 – 13

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Part no. 7P6907530C

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

€28.95

Free delivery: Nov 12 – 13

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Volkswagen Golf Mk7 5G R Wiring Harness Loom Guide Cover Mount 5Q0971879

€23.95

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BMW 7 Series 7 E65 E66 E67 Ultra Sonic Module

€23.95

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Part no. A1175450000

Mercedes C117 Keyless GO Control Unit Module Mount Bracket Holder A1175450000

€28.95

Free delivery: Nov 12 – 13

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Part no. A2059064003-2

Mercedes W205 Front Headlamp Headlight LED Wiring Cable Right O/S A2059064003

€23.95

Free delivery: Nov 10 – 13

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Part no. 6925715

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

€23.95

Free delivery: Nov 12 – 13

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Part no. BH42-14F041-AA

Land Rover Range Rover L322 Body Control Module Fuse Box 4.4 TDV8 BH42-14F041-AA

€99.95

Free delivery: Nov 12 – 13

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Citroën C4 Grand Picasso Impact Crash Sensor Unit 9675280080

€32.95

Free delivery: Nov 12 – 13

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Ford Transit Mk7 2.2 TDCi Diesel Engine Alternator Generator Unit CC1T-10300-BB

€66.95

Free delivery: Nov 12 – 13

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Range Rover L405 Electronic Radio Supression Module Passive Filtering LR044033

€89.95

Free delivery: Nov 12 – 13

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Part no. 8X2Q-12A650-KAG

Jaguar XF X250 2.7 Diesel 207HP AJD7G Engine Control Module ECU 8X2Q-12A650-KAG

€80.95

Free delivery: Nov 12 – 13

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Audi A1 8x ECU Module Ignition Key 1.6 TDI 105HP CAYC Manual Diesel 03L906023PT

€47.95

Free delivery: Nov 12 – 13

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Part no. K8D2-14A073-BD

Land Rover Discovery Sport L550 Fuse Box Control Module Unit K8D2-14A073-BD

€37.95

Free delivery: Nov 12 – 13

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Part no. 04L906021FQ

Audi A6 C7 Engine Control ECU 190HP 2.0 TDI Diesel CNHA Automatic 04L906021FQ

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9P0971174D

Porsche 718 Cayman 982 PDC Parktronic Wiring Harness Wire 9P0971174D

€246.95

Free delivery: Nov 12 – 13

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Land Rover Range Rover L322 Battery Power Distribution Fuse Box 9441776

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6W8315K601SA

Jaguar XF X250 315mHz Remote Control System Key Module Unit 6W83-15K601-SA

€37.95

Free delivery: Nov 12 – 13

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Part no. 4H0035225

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

€23.95

Free delivery: Nov 12 – 13

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Part no. GK72-12A692-AB

Land Rover Discovery Sport L550 ECU Engine Control Unit Bracket GK72-12A692-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0919620

Audi A4 B9 A5 F5 Display Screen Radio Multimedia Navigation Sat Nav 4G2919601P

€265.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 11080370000

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

€113.95

Free delivery: Nov 12 – 13

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Part no. 8K0907064JG

Audi Q5 8R BCM Body Control Module Unit ECU 8K0907064JG

€42.95

Free delivery: Nov 12 – 13

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Mercedes W177 Engine Compartment Power Distribution Fuse Box Unit A1775405931

€99.95

Free delivery: Nov 12 – 13

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

€23.95

Free delivery: Nov 12 – 13

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Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6395406809

€23.95

Free delivery: Nov 12 – 13

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Part no. M8A2-14C361-CB

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€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Free delivery: Nov 12 – 13

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Part no. 3AA971230H

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

€42.95

Free delivery: Nov 12 – 13

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

€51.95

Free delivery: Nov 12 – 13

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

€32.95

Free delivery: Nov 12 – 13

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Free delivery: Nov 12 – 13

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€189.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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€70.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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€99.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV1T-14A584-GCD

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€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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€23.95

Free delivery: Nov 12 – 13

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€118.95

Free delivery: Nov 12 – 13

If paid before 14:00

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

€142.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8V5945096-2

Audi A3 8V Sedan Rear Right O/S Tail Light Lamp Taillight Harness Loom 8V5945096

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. AH22-14D620-AC

Range Rover Sport L320 Rear Door Control Module Left Right N/O/S AH22-14D620-AC

€32.95

Free delivery: Nov 12 – 13

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Part no. F60B-14A094-AA

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

€23.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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Audi A6 C8 Positive Plus + Battery Cable Wiring 4K0971225

€37.95

Free delivery: Nov 12 – 13

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

€28.95

Free delivery: Nov 12 – 13

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

€51.95

Free delivery: Nov 12 – 13

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Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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

€23.95

Free delivery: Nov 12 – 13

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Volkswagen New Beetle 1.4 TSI Petrol Engine Starter Motor 02Z911023E

€23.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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€51.95

Free delivery: Nov 12 – 13

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Mercedes Vito W447 Battery Cable Starter Alternator Wiring Harness A4475402105

€23.95

Free delivery: Nov 12 – 13

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€89.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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Free delivery: Nov 12 – 13

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€32.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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€108.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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€336.95

Free delivery: Nov 12 – 13

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Free delivery: Nov 12 – 13

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