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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€23.95

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Mercedes W204 W221 Fuel Pump Module Control Unit A2129003408

€23.95

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Mercedes CL203 Head Unit CD Player Radio Audio Controller Unit A2039000000

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€66.95

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BMW X5 E60 E61 E63 E64 E70 Control Unit Module Passive Go 9134707

€23.95

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Part no. 9134667

BMW X5 E70 E87 E90 E91 E92 Seat Control Unit Module ECU 9134667

€42.95

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BMW E81 E87 LCI E90 N43 118i 318i ECU Kit DME CAS3 Key 7621178 Manual

€189.95

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Parking Module Mercedes W204 S204 PDC Distance Control Unit Sensor A2049009004

€23.95

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Navigation System BMW X3 E83 Z4 E85 Mini R50 R52 DVD GPS Computer Unit

€142.95

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Part no. 9221861

BMW E90 E91 E93 LCI Front Left Right N/O/S Seat Control Module ECU 9221861

€66.95

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Part no. 6860387

Air Suspension Module BMW X5 F15 F85 X6 F16 F86 Regulation Control Unit 6860387

€23.95

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BMW F20 F21 F22 F30 F31 Head Unit Media DAB Navigation Business Headunit 6821135

€113.95

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Part no. 4G0035061J

Audi A7 4G A4 B8 A6 C7 Q5 8R Sat Navi Stereo Radio Audio Unit Player 4G0035061J

€284.95

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Part no. 8734748

Telematics Control Unit BMW F20 F31 LCI F32 Module ATM ECE 4G WLAN 8734748

€75.95

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BMW F20 F30 F31 F32 ECU Camera Module Based Drive Support

€23.95

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Part no. A0009061903

Mercedes W176 W242 W246 Alternator Generator Bosch M270 Petrol A0009061903

€56.95

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Part no. 6G9T-14B192-AA

Ford Mondeo Transit Relay 4-Pin Black FoMoCo Unit 6G9T-14B192-AA

€23.95

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Part no. 9151516

BMW E60 E63 E64 LCI Body Control Unit Module 9151516

€23.95

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Mercedes-Benz A B Class W169 W245 Fuse Box Relay Module Unit A1695450001

€23.95

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BMW F20 F21 F22 Mid Range Sound Speaker Stereo HiFi 9288770

€23.95

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Part no. 6864208

BMW F20 F21 F22 F30 F31 Air Module ECU ICM Control Unit 6864208

€23.95

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Part no. 3Q0907530L

VW Volkswagen Golf SV Gateway Control Unit Module ECU GW MQB High 3Q0907530L

€23.95

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Engine Wiring BMW E90 E91 LCI N47N Loom Harness Cable Automatic Gearbox 8510249

€23.95

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Part no. 4E0035541S

Audi Q7 4L Radio Multimedia Receiver Control Module Unit 4E0035541S

€32.95

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Fuse Box BMW F01 F02 F07 F10 F11 Power Distribution Front 9234421

€23.95

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BMW 5 6 Series E60 E61 E63 Airbag ECU Control Unit Centre Vehicle Sensor

€23.95

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ICM Module BMW F07 GT F01 F02 F03 F04 Air Module Control Unit ECU 9266328

€23.95

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Audi A3 8P Telematics Bluetooth Module Control Unit ECU 8P1862335

€23.95

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Airbag Module Mercedes W204 W207 Air Bag SRS Control Unit ECU A2079011700

€23.95

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BMW 3 Series E93 Seat Control Unit Module FSV 7.11.0 9148267

€94.95

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Audi A5 F5 HV Battery Negative Cable Terminal 8W0915181A

€28.95

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BMW MINI Clubman R55 Cable Wiring Loom Splitdoor Split Door Rear Right O/S

€23.95

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BMW F10 LCI Light Control Footwell Module ECU Unit FRM3 9345374

€70.95

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BMW F20 LCI N20 F22 N26 Wiring Loom Harness Engine Module Ignition

€23.95

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Part no. 5Q0959592E

Audi A3 8V Front Door Module Control Unit Module Right O/S ECU 5Q0959592E

€23.95

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FEM Unit BMW F20 F22 F30 F32 Control Unit Module ECU Fuse Box 9352861

€142.95

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Mercedes-Benz W212 ECU Control Unit Sensor Module Airbag A2129014204

€32.95

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Alternator Generator Mercedes W204 W207 Diesel Engine Valeo 150A A0141541102

€94.95

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Mercedes S204 Estate SAM Module Fuse Box Relay Control Unit A2129005812

€70.95

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Part no. 4F0959795P

Audi A6 C6 Rear Left N/S Door Lock Control Module Unit ECU 4F0959795P

€23.95

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Part no. 1826146

Ford Transit Custom 2.2 TDCi Glow Plug Wiring Loom Cable Wire CK2T-6M091-AD

€23.95

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Audi A3 8P Air Module Control Unit ECU Module 8P0959655P

€23.95

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BMW 1 3 Series E81 E87 E90 PDC Parking Ultrasonic Sensor Red Japanrot Japan Red

€23.95

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Part no. A2118702726

Mercedes C E Class W203 W211 Bluetooth Control Unit Module ECU A2118702726

€23.95

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Part no. A2711541402

Mercedes W203 W204 M271 Engine Alternator Generator Valeo 120A 14V A2711541402

€80.95

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Part no. 9122100

BMW 1 Series E88 Mini Cooper R57 R59 Sat Nav GPS Antenna Amplifier 9122100

€28.95

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Part no. 6819333

BMW F30 Rear Body Control Unit Module V2 6819333

€23.95

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Part no. 6886185

BMW F20 F21 F30 F31 ICM Module Air Module Control Unit ECU 6886185 0265020864

€23.95

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BMW 1 2 3 4 Series F20 F21 F30 F80 Cover Power Distribution Fuse Box 9224872

€23.95

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Part no. A1729009302

Mercedes W212 W221 Media Interface Control Unit Module A1729009302

€23.95

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Air Module BMW F20 F21 F22 F30 F31 F32 Control Unit ECU 9258350

€23.95

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Part no. 6G9T-14B192-AA-1

Ford Mondeo Transit Relay 4-Pin Black FoMoCo Unit 6G9T-14B192-AA SET X2

€23.95

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Part no. A2049004106

Parktronic Module Mercedes W204 PDC Parking Sensors Control Unit A2049004106

€23.95

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BMW X1 E84 Diversity Aerial Antenna Amplifier DAB 9168336

€37.95

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Audi A3 8P Battery Box Tray Housing Holder Bracket Cover Mount 1K0915333H

€23.95

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BMW E90 LCI ECU Footwell Light Module FRM3R Rear Led Basis 9263800

€75.95

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BMW 1 Series F20 F21 F22 F30 F31 F35 Control Unit Box Engine 8509722

€23.95

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Part no. 6940237

Wiring Cable AUX BMW E90 E91 E92 E93 Loom Kit Jack Plug Input 375MM 6940237

€23.95

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Part no. A1669005511

Door Module Mercedes W176 W246 Front Left N/S Control Unit VST A1669005511

€23.95

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Mercedes W211 S211 Bluetooth Control Unit Module ECU A2118200885

€23.95

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Part no. 5Q0907357

Audi A3 8V Headlight Head Light Lamp Range Control Unit Module ECU 5Q0907357

€23.95

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Part no. 9280185

Air Module BMW F10 F11 F01 F02 F03 LCI Control Unit ECU 9280185

€23.95

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Part no. A2035450803

Mercedes W203 Battery Terminal Fuse Box Electrical Unit A2035450803

€23.95

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Part no. 9226333

BMW E93 ECU Body Control Module H3 Junction Box PL2RR JBBFE IIIR 9226333

€80.95

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BMW 3 Series E93 E93N LCI 1 Rear Bumper Antenna Aerial Telephone 6970701

€23.95

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Distributor BMW X5 F15 X6 F16 B + Battery Power Distributor 9285504

€23.95

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BMW F10 F20 F30 Front Seat Control Unit Module Memory 9280913

€23.95

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Mercedes ML W164 Control Unit Module DC UHI MOST A2118701885

€23.95

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Mercedes SLK R171 Crash Sensor Air Module Impact Control Unit A0038212851

€94.95

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Part no. A2129004314

Door Module Mercedes W204 W212 Front Right O/S Control Unit A2129004314

€23.95

Free delivery: Sep 11 – 14

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BMW F01 F10 F20 F21 F30 F87 Integrated Supply Module Unit 7591534

€23.95

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Part no. 8R0907468N

Audi A5 8T Gateway Control Module Unit ECU 8R0907468N

€23.95

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Part no. 4H0907063CF

Audi A6 C7 Board Supply Comfort BCM Body Control Module Unit ECU 4H0907063CF

€23.95

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BMW X1 Series E84 Antenna Aerial Noise Suppression Filter 9181455

€23.95

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Part no. A1698705894

Mercedes W169 W245 CD Player Radio Stereo Head Unit A1698705894

€75.95

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Part no. 9188582

BMW X3 F25 Holder Audio Amplifier Telephone Bracket Mount Trim 9188582

€23.95

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Part no. A0025422619

Mercedes ML W163 Relay 4-Pin Grey Tyco A0025422619

€23.95

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Part no. 9257152

Telematics Bluetooth BMW F10 F20 F22 F30 Combox GPS Control Unit Module 9257152

€42.95

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BMW E81 E82 E87 E88 E90 E91 E92 Plug Socket Loom PDC Parking Sensor

€23.95

Free delivery: Sep 11 – 14

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Part no. A0009063903

Alternator Generator Mercedes W205 W213 Diesel Engine Valeo 200A A0009063903

€113.95

Free delivery: Sep 11 – 14

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Part no. 7374942

BMW F20 F21 F30 F31 Fuel Pump Control Unit Module 7374942

€23.95

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Part no. A9065410400

Battery Bracket Mercedes Sprinter W906 W910 Mount Trim Holder A9065410400

€23.95

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Volkswagen Golf 7 Audi A1 A3 Seat Ibiza Petrol Engine Starter Motor 02M911024J

€23.95

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Mini Cooper One R50 R52 W10 1 Battery Cable Plus Pole 7522284

€23.95

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Signal Actuation Module Mercedes W176 W246 SAM Control Unit ECU A1569007702

€23.95

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Audi A5 8T Windscreen Rain Sensor Control Unit 8U0955559B

€23.95

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€99.95

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Part no. 5M0907357C

Volkswagen VW Tiguan 5N Headlight Range Control Unit Module ECU 5M0907357C

€23.95

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Part no. 6G9T-14B192-DA

Ford Galaxy Mondeo Transit Relay 4-Pin Black FoMoCo Unit 6G9T-14B192-DA

€23.95

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Part no. 9230046

BMW 1 2 SERIES F20 F20N F21 F22 UNDER CAR POSITIVE BATTERY LEAD CABLE 9230046

€37.95

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Part no. A2118705426

Rain Sensor Mercedes W211 C219 Front Windscreen Control Unit A2118705426

€23.95

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FEM Module BMW F20 F21 F22 F30 F31 F32 F36 Control Unit 9288304

€51.95

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Part no. 1489994

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€23.95

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Mercedes W176 W246 Relay Battery Decoupling 12V A0035422319

€23.95

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€23.95

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