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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Audi A3 8V Fuse Box Control Module Relay Box 5Q0907361C

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BMW F20 N13B16A 170HP Engine Control Module ECU Kit DDE 7634297 Automatic

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BMW 5 Series E60 E61 LCI Centre Console Switch Cluster Control Unit ECU 9113064

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Free delivery: Sep 15 – 16

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Volkswagen Golf Mk6 Seat Ibiza Mk4 Engine ECU Mount Bracket Support 6R0906507F

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Free delivery: Sep 15 – 16

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VW Volkswagen Passat B7 Hands Free Microfon Cable Wiring 3C0035711A

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Free delivery: Sep 15 – 16

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Volkswagen Tiguan Mk2 Tailgate Inner LED Light Lamp Wiring Right O/S 5NA945308E

€23.95

Free delivery: Sep 15 – 16

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Audi A3 S3 RS3 8V Entry Keyless Kessy Control Module Unit ECU 3Q0959435F

€23.95

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Land Rover Discovery Sport L550 Windscreen Rain Sensor Module CPLA-17D547-AP

€23.95

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BMW F10 Sound Audio Amplifier Control Unit Module 9320144

€593.95

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Audi TT FY 8S LED Module Light Unit Wiring Harness 8S0947355

€23.95

Free delivery: Sep 15 – 16

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BMW X1 E84 Door Wiring Harness Driver's Side Cable Loom Wiring 9247075

€28.95

Free delivery: Sep 15 – 16

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Mercedes W211 Door Module Rear Right O/S Control Unit ECU A2118703285

€23.95

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Part no. BS7T14B321AC

Ford Mondeo Mk3 Air Unit Control Module ECU Restraint BS7T-14B321-AC

€42.95

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Mercedes W164 W211 Front Passenger Seat Memory Control Unit Module A2118704885

€32.95

Free delivery: Sep 15 – 16

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Part no. 6R0971349BP

Audi A1 8X Alternator Wiring Cable Loom Harness 1.6 TDI Diesel 6R0971349BP

€23.95

Free delivery: Sep 15 – 16

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BMW 3 Series F30 F80 M3 Radio Antenna Amplifier Suppression Filter 9231443

€23.95

Free delivery: Sep 15 – 16

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Audi R8 42 Diagnostic Plug Connector Wiring Loom Cable Harness 8D0972695

€23.95

Free delivery: Sep 15 – 16

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Part no. 2197568

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€28.95

Free delivery: Sep 15 – 16

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Part no. EB3T-14A254-A

Ford Ranger Mk3 Battery Holder Tray Bracket Power Distribution Box EB3T-14A254-A

€32.95

Free delivery: Sep 15 – 16

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Mercedes CL W216 W221 Air Module Control Unit A2218702993

€23.95

Free delivery: Sep 15 – 16

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BMW F45 Battery Management Electronics Control Module 9470053

€51.95

Free delivery: Sep 15 – 16

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Part no. A6519009702-4

Mercedes W176 OM651.930 136HP Engine Control ECU Kit A6519009702 Manual

€189.95

Free delivery: Sep 15 – 16

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Part no. 059903143BH

Audi A6 C8 Q7 4M A8 D5 Alternator Bracket Mount Holder Support 059903143BH

€66.95

Free delivery: Sep 15 – 16

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Part no. 7542529-1

BMW E87 E90 E91 E60 E61 E63 N52 Alternator Generator 155A 7542529

€47.95

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Audi A1 S1 8X 3D Door Wiring Harness Loom Cable Passenger Side 8X0971030J

€23.95

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Audi Q3 F3 Outer Rear Tail Light Plug Wire Cable Connector Left N/S 83A945091

€23.95

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BMW X3 G01 Rear Bumper PDC Wiring Loom Parking Sensor Cable Harness 8795109

€85.95

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Land Rover Range Rover L322 Fuse Relay Box 6G9T-14K131-AB

€23.95

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Audi A7 4G Radio Navigation CD Player Control Head Unit 4G1035021E

€1,329.95

Free delivery: Sep 15 – 16

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Part no. F30-NBT-CP

Unbranded BMW F30 NBT Multimedia Screen Display Radio Navigation F30-NBT-CP

€237.95

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Telematics Module Mini F55 LCI 4g Bluetooth Control Module Unit Ecu 9876796

€56.95

Free delivery: Sep 15 – 16

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BMW X5 F15 Fuel Tank Cable SCR AdBlue Unit Adapter Wiring Harness Diesel 9300859

€28.95

Free delivery: Sep 15 – 16

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Land Range Rover Sport L494 PDC Parking Aid ECU Control Unit HK52-15C859-AD

€70.95

Free delivery: Sep 15 – 16

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Part no. DK52-14A583-AD

Land Range Rover L405 Tailgate Upper Loom Wiring Harness Cable DK52-14A583-AD

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Free delivery: Sep 15 – 16

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BMW F20 F21 F30 116d 316d N47N 116HP Engine Control ECU Kit DDE 8578945 Manual

€237.95

Free delivery: Sep 15 – 16

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Ford Connect Mk2 Engine Starter Motor 1.5 EcoBlue 3M5T-11000-CG

€28.95

Free delivery: Sep 15 – 16

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Ford Mondeo MK4 Fuse Box Cover Panel Hosing Lid 6G9T-14A076-AF

€23.95

Free delivery: Sep 15 – 16

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Mercedes GLC 300e X253 Coupe Hybrid Electrical Battery Wire A0005401203

€23.95

Free delivery: Sep 15 – 16

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Part no. 83A945094D-1

Audi Q3 RSQ3 F3 Rear Tail Light Lamp LED Right O/S Harness Wire Loom 83A945094D

€23.95

Free delivery: Sep 15 – 16

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Part no. A2469066300-2

Mercedes W246 Rear Light Trunk Tailgate Wiring Inner Left N/S A2469066300

€23.95

Free delivery: Sep 15 – 16

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Part no. 7646814-1

BMW F10 F20 F30 LCI Alternator Generator Unit Diesel B47 7646814

€66.95

Free delivery: Sep 15 – 16

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Part no. 7P6907357B

Volkswagen Golf Mk7 Headlight Head Lamp Range Control Unit Module ECU 7P6907357D

€75.95

Free delivery: Sep 15 – 16

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Part no. CC1112B533AB

Ford Transit MK7 Diesel Glow Plug Relay Control Unit Module CC11-12B533-AB

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8374991

BMW Z4 E85 E86 Negative Minus Battery Cable Lead Wiring Loom 8374991

€23.95

Free delivery: Sep 15 – 16

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Part no. A4539052600

Smart Fortwo C453 Aerial Antenna Rod Radio GPS Antenna Unit A4539052600

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1S0919275D-CAN

Audi A7 4G PDC Parking Distance Sensor SET X4 Candy White - B9A F9E 1S0919275D

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9119446-1

BMW E81 X1 E84 E87 E90 E91 E92 Front Fuse Box Power Distribution Unit 9119446

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. YC1E10K019BA

Ford Transit MK6 2.4 Diesel Alternator Bracket Mount Support YC1E10K019BA

€23.95

Free delivery: Sep 15 – 16

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Part no. BV6T-14E073-BAD

Ford Focus Mk3 Front Door Wiring Loom Harness Right O/S BV6T-14E073-BAD

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. HJ32-12A610-DB

Land Rover Discovery L550 Glow Plug Relay Bracket Mount Support HJ32-12A610-DB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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Smart 453 Fortwo Air Conditioning Heater Climate Control Unit A4539003802

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. F10-SCREEN-1

BMW F10 F11 On-Board Screen Central Information Display Camera 10,25" 4+64G

€284.95

Free delivery: Sep 15 – 16

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Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9257090

€332.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BK3T-17A477-BA

Ford Transit Mk8 Wiper Motor Plug Wiring Loom Harness Connector BK3T-17A477-BA

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8E5035223E

Audi A4 Avant B7 Bose Stereo Radio Sound System Amplifier Module 8E5035223E

€23.95

Free delivery: Sep 15 – 16

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Part no. LR037710-2

Range Rover Evoque L538 Rear Tail Light Lamp Connector Wire Right O/S LR037710

€23.95

Free delivery: Sep 15 – 16

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Part no. 7L6035195

VW Volkswagen Touareg 7L Radio Player Navigation Sat Nav Head Unit 7L6035195

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. F1BT-18C815-GK

Ford Transit Mk8 Radio Player CD Multimedia Head Unit Module F1BT-18C815-GK

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6907520

BMW 5 X5 Series E39 E53 Dual Band Cable Compensator Hands Free Phone 6907520

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9224687

BMW Mini Clubman R55 LCI Cable Wiring Loom Splitdoor Door Rear Left N/S 9224424

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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BMW 7 Series E65 E66 E67 Seat Control Unit Module Heating 6918567

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

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BMW 3 Series E46 M47N Diesel Negative Earth Cable Battery 6928523

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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BMW X5 F15 Wiring Harness Loom Cable 6801327

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. GOLF-5K-SCREEN-4

VW Golf Mk5 Mk6 Passat B6 B7 Car Radio Display MMI Multimedia Touch Screen 7"

€237.95

Free delivery: Sep 15 – 16

If paid before 14:00

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€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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BMW X3 F25 Fan Heater Blower Unit Motor Wiring Cable Harness Loom 9311283

€33.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1669006307

Mercedes GLE C292 ML W166 Door Control Module Rear Left N/S A1669006307

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2135406831

Mercedes W213 Rear Door Wiring Harness Keyless Left Right N/O/S A2135406831

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8631725-7

BMW F22 F30 F32 ECU Kit DME N20 184HP Petrol 220i 320i 420i 8631725

€560.95

Free delivery: Sep 15 – 16

If paid before 14:00

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Relay Glow Littlefuse Mega Fuse 250 Amp 5293147

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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BMW G20 330e Hybrid Battery Positive Cable Wiring 5A69273

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

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Citroën Relay III Door Wiring Loom Harness Cable Front Right O/S 01395548080

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

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Ford Focus St Mk8 Xenon Headlight Ballast Control Unit Module JX7B-13B626-AE

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

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VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Left N/S 7P6035552M

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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Ford Puma St Cf7 Multimedia Radio Head Unit H1BT-18K810-ZAU

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

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Mercedes W169 Front Bumper Parking Sensor Wiring Loom Cable Harness A1695400506

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

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BMW E87 E90 LCI N47 118d 318d Diesel Engine Control Unit ECU DDE Manual Gearbox

€61.95

Free delivery: Sep 15 – 16

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Land Rover Discovery Sport L550 Vibration Damper Control Module FK727L195BA

€23.95

Free delivery: Sep 15 – 16

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2 x Mini R52 Convertible DWA Door Alarm System Module Control Unit Set 6949229

€23.95

Free delivery: Sep 15 – 16

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€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

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€32.95

Free delivery: Sep 15 – 16

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€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

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€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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€23.95

Free delivery: Sep 15 – 16

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€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

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€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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BMW G60 G61 G68 U10 U11 U12 Impact Crash Accelerating Sensor 9496818

€23.95

Free delivery: Sep 15 – 16

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Ford Transit Mk7 Engine Bay Fuse Box Wiring Loom 2.2 TDCi AC1T-9K499-FNA

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

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Audi Q7 4L Door Card Wiring Loom Harness Cable Front Left N/S 4L0971035AH

€37.95

Free delivery: Sep 15 – 16

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Ford Mondeo Mk4 Battery Cable Negative IBS AG9N-10C679-DB

€23.95

Free delivery: Sep 15 – 16

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Range Rover L405 Battery Positive Plus Fuse Cable Loom CK52-14N144-CE

€23.95

Free delivery: Sep 15 – 16

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€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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Mercedes GLC X253 Sound Audio Amplifier Module Rear Harman A2439008400

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

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€32.95

Free delivery: Sep 15 – 16

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