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 1 Series F20 Front Left Door N/S Wiring Loom Harness Cables 9291964

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 3414469

BMW X3 E83 Fuse Grouping Front Stick-on Label Diagram 9267980

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. CK52-14F641-AF

Range Rover L405 Digital TV Tuner Control Module Unit CK52-14F641-AF

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. EB3G-12B508-BB

Ford Ranger Mk3 Fusebox Bracket Fuse Box Panel Tray Mount EB3G12B508BB

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9339274

CAS4 Module BMW F01 F07 F10 F11 F12 X3 F25 Key Reading Control Unit 9339274

€66.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8P0959655N

Audi A3 8P Side Air Module Control Unit ECU 8P0959655N

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 5K0907159A

Volkswagen Golf Mk6 Impact Sound Control Module Unit 5K0907159A

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8K0907297A

Audi S5 8T Parking Aid PDC ECU Control Unit Bracket Holder Retainer 8K0907297A

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 4K0915459F-1

Audi A6 C8 Power Disctribution Control Module 4K0915459F

€51.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 5A8E799

BMW G20 Radio Multimedia Satellite Navigation Head Unit 5A8E799

€284.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8U0919603

Audi Q3 8U Multimedia MMI Head-Up Display Screen 6" RMC Sat Nav 8U0919603

€123.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 03G906056S-2

Audi A3 8P 1.9 TDI BLS 105HP Engine Control Unit ECU Kit 03G906056S Manual

€113.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7581848-1

BMW E81 E87 LCI E90 116i 316i N45N ECU Kit DME CAS3 + Key 7581848

€455.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2129061703-2

Mercedes S212 Rear Tail Light Lamp Wiring Harness Outer Left N/S A2129061703

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 5S6Y-19G229-AB

Ford Fiesta St Mk5 Alarm Siren Horn 2.0 DURATEC ST150 N4JB 5S6Y-19G229-AB

€94.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. LR133289

Range Rover Sport L494 Transfer Box Wiring Harness 3.0 Diesel LPLA-13N850-BB

€42.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 95863109602-2

Porsche Cayenne 92A Rear Tail Light Lamp Cable Wire Plug Right O/S 95863109602

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A4475406453

Battery Cable Mercedes Vito W447 Diesel OM651 Alternator Wiring A4475406453

€37.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2218705093

Mercedes W221 Door Control Module Unit ECU Rear Left Right N/O/S A2218705093

€56.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2198200226

Door Module Mercedes C219 Rear Door Left N/S Control Module A2198200226

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8K0907279D

Audi A5 8T Gateway Convenience Body Module Control Unit ECU 8K0907279D

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8603352-7

BMW F20 F30 116i 316i N13 136HP Engine ECU Kit DME 8625241 FEM Key Lock Manual

€569.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 03G906016BF

Audi A6 C6 Engine Control Unit ECU 2.0 TDI 140HP BLB Diesel Manual 03G906016BF

€80.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8662849-3

Mini Cooper S F55 F56 B48 192HP Petrol Engine ECU Kit DME 8662849 Manual

€664.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 1K8980551

VW Scirocco Mk3 Reversing Camera Rear View Parking Cable Wiring 1K8980551

€203.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9210037

BMW X1 E84 Air Conditioning Heater Loom Harness Cable Wiring N47 9210037

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9287756

Loudspeaker Centre BMW F25 F15 Central Woofer Audio Speaker 9287756

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8582279-4

BMW F30 320d ed Diesel N47N 163HP Engine Control Unit ECU DDE 8582279 Manual

€70.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 98764710500-1

Porsche Cayman 987 Antenna Aerial Amplifier Radio Booster 98764710500

€37.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 1T0035530

VW Volkswagen Touareg 7L Antenna Aerial Amplifier Booster Unit 1T0035530

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 4M0971227CB

Audi Q7 4M 3.0 TDI Battery Earth Cable Lead Negative Wiring 4M0971227CB

€37.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2215408809

Mercedes W221 Door Harness Wiring Loom Rear Left N/S A2215408809

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 282750596R

Smart 453 Fortwo Telematic Control Unit Bluetooth Module 282750596R

€42.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 4M1959592K

Audi A6 C8 A7 4K Door Module Control Unit ECU Front Passenger Side 4M1959592K

€61.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8K1907115A-1

Audi A4 B8 1.8 TFSI CABB 160HP Engine Control Module Unit ECU 8K1907115A Manual

€80.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 5E3035816M

Skoda Octavia Mk4 Sat Nav Radio Player Head Unit Module 5E3035816M

€332.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2215406562

Mercedes W204 Petrol Fuel Pump Control Unit Module A2215406562

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 5Q0035726E-1

VW Passat B8 Skoda Superb Mk3 Fabia Mk3 USB Port Socket Connector 5Q0035726E

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A4474404705

Engine Wiring Mercedes Vito W447 OM651 Engine Harness Cable A4474404705

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 5Q0907361C

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. YDB500290

Land Rover Discovery 3 L319 Windscreen Rain Sensor ECU Control Unit YDB500290

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A1779059402

Mercedes W177 Remote Car Key Electronic A1779059402

€94.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7634297-5

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

€427.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9113064

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6R0906507F

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A1638200289

Mercedes-Benz M-Class M W163 Aerial Antenna Amplifier Module Unit A1638200289

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9321024

Mini F54 F55 F56 F57 F60 B+ Distributor Clubman Countryman Active Tourer 9321024

€42.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 3C0035711A

VW Volkswagen Passat B7 Hands Free Microfon Cable Wiring 3C0035711A

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 5NA945308E-2

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 3Q0959435F

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. CPLA-17D547-AP

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8512415-7

Mini Cooper SD R60 ALL4 N47N 143HP Engine ECU Kit DDE 8512415 CAS3 Key Manual

€123.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8S0947355

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2118703285

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2118704885

Mercedes W164 W211 Front Passenger Seat Memory Control Unit Module A2118704885

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9231443

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8D0972695

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 2197568

Ford Fiesta Mk7 Starter Motor 1.0 Petrol Engine CV6T-11000-GE

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. EB3T-14A254-A

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

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2218702993

Mercedes CL W216 W221 Air Module Control Unit A2218702993

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9470053

BMW F45 Battery Management Electronics Control Module 9470053

€51.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 059903143BH

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

€66.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 83A945091-2

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8795109

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

€85.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6G9T-14K131-AB

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 4G1035021E

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

€1,329.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. F30-NBT-CP

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

€237.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9876796

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

€61.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9300859

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

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. HK52-15C859-AD

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

€70.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. DK52-14A583-AD

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

€80.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8578945-6

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

€237.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 2109635

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

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6G9T-14A076-AF

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A0005401203

Mercedes GLC 300e X253 Coupe Hybrid Electrical Battery Wire A0005401203

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 83A945094D-1

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2469066300-2

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7646814-1

BMW F10 F20 F30 LCI Alternator Generator Unit Diesel B47 7646814

€66.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9P1919607E

Porsche 718 Boxster 982 Multimedia Sat Navigation Screen Display 9P1919607E

€716.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7P6907357B

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

€80.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. CC1112B533AB

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

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 1477973

Ford Transit Connect Mk1 Starter Motor Engine Actuator 1.8 Diesel 2T14-11000-BC

€47.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A4539052600

Smart Fortwo C453 Aerial Antenna Rod Radio GPS Antenna Unit A4539052600

€94.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. YC1E10K019BA

Ford Transit MK6 2.4 Diesel Alternator Bracket Mount Support YC1E10K019BA

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. BV6T-14E073-BAD

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

€37.95

Free delivery: Aug 7 – 10

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: Aug 7 – 10

If paid before 14:00

Part no. A4539003802

Smart 453 Fortwo Air Conditioning Heater Climate Control Unit A4539003802

€23.95

Free delivery: Aug 7 – 10

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: Aug 7 – 10

If paid before 14:00

Part no. 9257090

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

€332.95

Free delivery: Aug 7 – 10

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: Aug 7 – 10

If paid before 14:00

Part no. 8E5035223E

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

€42.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. LR037710-2

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7L6035195

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

€70.95

Free delivery: Aug 7 – 10

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: Aug 7 – 10

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: Aug 7 – 10

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: Aug 7 – 10

If paid before 14:00

Part no. 6918567

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

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6928523

BMW 3 Series E46 M47N Diesel Negative Earth Cable Battery 6928523

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6801327

BMW X5 F15 Wiring Harness Loom Cable 6801327

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

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