Automotive electrical systems
More informationAt 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-Benz A W168 CDI Battery Terminal Positive Cable Wiring A1685401130
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Pioneer SPH-DA120 Head Unit Apple Carplay Android Auto Bluetooth Media Player
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BMW 3 5 Series E39 E46 Touring Ultrasonic Roof Alarm Sensor Module ECU 6938049
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BMW F23 REM Rear Electronic Module Fuse Box Control Unit V2 9374507
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Volkswagen Golf Mk4 Alternator Generator BOSCH 14V 70A 028903028C
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BMW Z4 E89 Roadster HiFi Speaker Sound System Amplifier AMP Unit 9118032
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AUDI Q7 4L Quattro 3.0 TDI BUS Diagnostic Gateway Interface Module 4F0907468R
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BMW X3 F25 ECU ICM Control Unit Air Module Bag Safety 6860962 0265020494
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Blind Spot Sensor BMW F40 G20 G21 G30 G31 Radar Range Module SRR-01 Rear 7915643
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Audio Amplifier BMW F20 F21 LCI Mini F56 Top Hifi Harman Kardon Unit 6836346
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Volkswagen Polo 6R BCM Body Comfort Control Module Unit ECU 6R0937085B
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BMW E60 E61 E63 E64 Micro Power Control Module MPM ECU 6939655
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BMW 3 Series E90 E91 LCI N47N 320d 184HP ECU KIT DDE CAS 3 Key 8512291 Manual
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BMW E60 E87 E90 120d 320d 520d M47N2 Engine Control ECU Kit DDE 7803373 CAS3
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Mercedes Vito W447 Fuse Relay Box Control Module A4475404326
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VW Golf MK5 1.9 TDI BKC Engine Alternator Mount Support Bracket 03G903143A
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Audi A7 4G A4 B8 A6 C7 Q5 8R Sat Navi Stereo Radio Audio Unit Player 4G0035061J
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BMW F20 F21 F22 F30 F31 F32 Control Unit Airbag Ecu 9296494
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Mercedes W221 SAM Relay Fuse Box Module Control Unit ECU A2215402250
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Mercedes S204 Module Control Unit Trunk Lid Rear Tailgate Lift A2048702826
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BMW F01 F10 F11 LCI IBS Negative Battery Lead Cable 9234437
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Audi A5 F5 Sat Navi MMI Multimedia Radio SD Reader Head Unit Harman 8W5035035C
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Mercedes-Benz A-Class W168 Sensor Mat Seat Occupation Recognition A1688207310
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CAS4 Module BMW F01 F10 F11 Key Reading Control Unit 9257036
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BMW E46 Control Unit Module Mirror Memory 6913364
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CD Player BMW E60 E61 LCI E63 E64 Radio Stereo CHAMP Business Head Unit 9187903
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Starter BMW F10 F07GT F13 F03 X5 E70 Petrol N63 Starter Motor 1.6 KW 7556131
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BMW F10 F20 F30 Rear View Camera Wiring Loom Cable 9350995
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Engine Wiring BMW F10 F31 F32 N20 Loom Module Harness Cable 7641652
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BMW F30 F33 Rear PDC Sensors Wiring Loom Cable 2295873
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Mercedes W204 Front Fuse Box Relay Control Unit SAM Module A2129005622
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BMW 5 SERIES E60 E61 LCI 520d N47 Engine Wiring Loom Harness DDE Manual 7807198
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Control Unit BMW F20 F21 F22 F30 F31 F32 ICM Module ECU 6879834
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Fuse Box Citroen Berlingo Peugeot Partner BSM Control Unit Module 9675878480
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BMW E46 Coupe Convertible Door Wiring Passenger Side Cable Harness Loom 6903096
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Mercedes W168 Vaneo W414 Diesel Engine Speed Starter Motor A0051511601
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Mercedes W203 CD Media Player Radio Audio 20 Phone Head Unit A2038705089
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BMW E87 E90 E91 118i 318i N46 129HP Engine ECU Kit DME 7565300 Manual Key CAS 3
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Mercedes W447 W907 W910 Engine Control Unit Module ECU A6549009400
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BMW E81 E87 LCI E90 E91 120d 320d Diesel N47 ECU Kit DDE 7810000 CAS3 + 2 Keys
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BMW E87 E90 LCI 116d 316d Diesel N47 ECU KIT Engine DDE 8506281 CAS3 Key Manual
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Mercedes R172 Cable Beam Engine Wiring Harness Loom A1725400533
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BMW 3 5 Series E39 E46 Positive Battery Terminal Cover Cap Red 8375653
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BMW F15 F85 F16 F86 Steering Wheel Lane Change Control ECU Module Unit 7849446
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Alternator Generator Mercedes W164 OM642 180A Electrical Unit Diesel A6421540502
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Air Module Unit BMW E60 E61 Sensor Control ECU 6978374
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Mercedes W212 Rear Suspension Level Sensor Wiring Loom Cable Harness A2125402705
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BMW E60 E61 Body Gateway Module KGM HIGH 9118729
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BMW X3 F25 Rear Bumper PDC Wiring Loom Parking Sensor Cable Harness 9315094
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Audi A7 4G8 Tailgate Lift Boot Lid Control Unit Module Trunk 4G8959107Q
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Mercedes Vito W447 Head Unit Radio Navigation GPS Nav Display A4479009005
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Mercedes Vito W639 Key Reader Ignition Lock Cable Wiring Harness A6395402710
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Mercedes W203 W221 Rain Light Sensor Control Module A2218700092
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BMW F32 GPS Navigation Display Screen Android Auto CarPlay 10,25"
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Airbag Module Citroen Berlingo Peugeot Partner Control Unit Sensor 9674290780
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Mercedes C118 C205 C253 Automatic Gearbox Control Unit Module ECU A0009008324
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BMW F20 LCI F30 Mini F56 F60 Alternator Generator DENSO 180A 7640132
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Mercedes W203 W209 Relay Unit Module 2 Pins White Hella A0005461366
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Mercedes W221 Hood Bonnet Light Solar Sensor Module Unit A2118701310
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Mercedes W176 W246 Power Relay Control Module 5 Pin 12V A0009828323 Set X2
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Part no. 7823934-3
Mini Cooper D R55 R56 Diesel W16 109HP ECU Kit DDE 7823934 CAS3 Key Automatic
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BMW 5 6 X3 X5 Series E53 E60 E61 E63 E83 1 Cigarette Lighter Socket 6973036
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Mini Cooper R50 W10 116HP Engine Control Unit ECU Kit DME 7557395 Key EWS
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Audi Volkswagen Seat Skoda Petrol Alternator Generator 14V 140A 06J903023A
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Mercedes ML W163 Window Windscreen Rain Light Sensor Module A1638200726
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Audi Q3 8U Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 8U0971104E
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BMW F13 Footwell Light Module Control Unit ECU FRM3 9313933
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BMW E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit 9167201
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Audi A5 8T Head Unit Multimedia Screen Display CarPlay Infotainment Unit
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Part no. 8735982
BMW G30 G31 F90 M5 G11 Antenna Aerial Diversity Amplifier Unit 8735982
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Mercedes W205 SAM Module Front Body Comfort Control Unit ECU A2059006818
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BMW i3 I01 Holder Audio Amplifier Telephone Bracket Mount Trim 9251524
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Air Module Mercedes ML W166 Interior Safety SRS Control Module A1669001311
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BMW X5 E53 X3 E83 Control Unit Xenon Adaptive Headlight Ballast 6939069
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Vauxhall Corsa D 1.3 CDTI Z13DTH Diesel Engine Control Unit Module ECU 55568385
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BMW E60 E61 Body Gateway Control Module Unit KGM HIGH Lear 9133143
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Mercedes SLK R171 Door Module Front Right Control Unit ECU A1718207226
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Body Module BMW X3 F25 X4 F26 Control Unit Junction Box JBBFE 3 9384222
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Mercedes W176 W204 W207 Fuel Pump Module Petrol Control Unit ECU A0009000104
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Alternator Generator Mercedes W177 W247 M260 Petrol Engine 150A A0009068106
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Land Rover Range Sport L320 3.0 D Alternator Mount Support Bracket AH3210239BA
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Vauxhall Opel Insignia A 2.0 CDTI Alternator Bracket Belt Tensioner 55582510
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BMW E81 E82 E87 E88 E90 E91 E92 E93 Radio Professional CD Player 9263459
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BMW 3 E36 Coupe Saloon Aerial Antenna Amplifier Signal Booster Module 1387751
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BMW E39 X5 E53 3.0i M54 Alternator Generator 90A 14V Valeo 7501592
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Mercedes Vito W639 109CDI 646.980 95HP Engine ECU Kit A6461500678 Ignition + Key
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Audi Q7 4L 3.0 TDI V6 Diesel Engine Cable Wiring Duct Channel Cover 059971341E
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Mercedes W205 Head Radio CD Player Navi Interface Control Unit A2059006222
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Audi TT FV Navi SD GPS MMI Multimedia Head Unit Module 8S0035021B
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Mercedes W205 Control Unit Power Distribution Box Electrical A0009060086
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Roof Wiring Mercedes SLK R171 Covertible Roof Opening Wring Harness A1715404209
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Mercedes-Benz A B W176 W246 Engine Temperature Sensor Wiring Cable Harness
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Key components of vehicle electrical systems
Original electrical parts for popular car brands
A car's electrical system is a complex system responsible for many key functions—from engine starting to lighting and on-board electronics. Modern cars are equipped with increasingly advanced electrical solutions that not only improve driving comfort but also enhance safety. At the Global Parts automotive store you will find a wide range of used car parts , such as alternators, starters, batteries, control modules and other automotive electrical systems that perfectly fit BMW , Audi , Mercedes , Volkswagen , Mini and many others.
How does a car's electrical system work?
A car's electrical system is a complex system that consists of several key components that work together to ensure the vehicle's reliable operation:
- Battery accessories – Includes clamps, cables, holders and other components necessary for battery installation and maintenance.
- Electronic control modules and controllers – They control and manage the operation of various vehicle systems, such as the engine, air conditioning and ABS.
- Alternators and generators – Responsible for generating electricity and charging the battery while the engine is running.
- Parts for alternators and generators – Including voltage regulators, brushes and bearings that ensure proper operation of the alternator.
- Starters – Key components of the starting system that enable the engine to be started.
- Starter parts – Including bendixes, rotors and solenoids necessary for the proper operation of the starter.
- Batteries – They store the electrical energy necessary to start the engine and power on-board systems.
- Wires, harnesses and connectors – They transmit energy and electrical signals between various vehicle systems.
- Fuses and fuse boxes – Protect the electrical system against overloads and short circuits.
- Relays – They control the flow of current in individual electrical circuits of the vehicle. A functioning electrical system is the basis for the reliability of your car, regardless of operating conditions.
Key technical parameters of electrical systems
Each of these components has specific technical parameters that determine its compatibility with the vehicle. For example, alternators installed in mid-range cars (e.g., Volkswagen Passat B6) typically have a capacity of 90 A to 140 A, while luxury vehicles (e.g., Mercedes S-Class) require alternators with a capacity exceeding 180 A. Starter motors vary in torque and operating voltage – the standard is 12 V, while 24 V starters are used in heavy-duty vehicles.
Why is it worth taking care of your car's electrical system?
Regular maintenance and replacement of electrical system components is key to reliability and road safety. Faulty components can lead to:
- Problems starting the engine.
- Failure of safety systems such as ABS or airbags.
- Decreased efficiency of on-board equipment, e.g. lighting or air conditioning. At the Global Parts store we offer original used car parts , which have undergone detailed quality tests, ensuring their full functionality.
Symptoms of electrical system disruptions
In practice, electrical faults manifest themselves in a variety of ways. Drivers most often notice: dimming lights when parked, difficulty starting the engine, a voltage drop on the on-board computer, or air conditioning malfunctions. The table below presents typical correlations:
| Symptom | Possible cause | Item to check |
|---|---|---|
| Difficulty starting the engine | Worn out starter or battery | Starter motor, battery |
| Dimming the lights | Inefficient alternator | Alternator, voltage regulator |
| Electric windows not working | Damaged relays or harness | Relays, wires |
How to choose the right parts for your electrical system?
When choosing parts for the electrical system, such as alternators, starters or control modules, it is worth paying attention to:
- Vehicle-specific fit – Every car make and model requires specific specifications. At Global Parts, you'll find parts that perfectly fit BMW , Audi , Mercedes , Volkswagen , Mini, and many more .
- Technical condition – All used parts we offer are thoroughly checked to ensure their reliability.
- Technical parameters – For example, alternators should have appropriate current output, adapted to the needs of your vehicle.
Compatibility and fit
The selection of electrical parts is based primarily on OEM part numbers, but matching them to specific parameters is equally important, including current, voltage, and the number of connector pins. For example, the 120A alternator used in the Audi A4 B7 differs significantly from the 150A version installed in the Audi A6 C6 . Therefore, using manufacturer catalogs or providing the VIN makes finding the right component much easier.
Why choose used electrical parts?
Purchase of used car parts This solution allows you to combine savings with quality. Why choose it?
- Lower costs – Used alternators, starters and other parts are cheaper than new ones, but offer the same high quality.
- Ecology – You support recycling and reduce waste by choosing used car parts .
- Wide range – We offer electrical parts for the most popular car brands, so you can easily find what you need.
How to take care of your car's electrical system?
To ensure your electrical system operates reliably for years, it is worth remembering a few rules:
- Regularly check the battery condition and charge level.
- Take care of your cables and connectors – corrosion or damage can lead to voltage drops and failures.
- Monitor the operation of the alternator and starter – early detection of problems will help avoid more serious breakdowns. If you have any problems, you will find the right car parts at Global Parts that will help restore your vehicle to full working order.
Step-by-step control procedures
- Measure the battery voltage with a multimeter – the resting value should be approximately 12.6 V.
- Check the charging voltage with the engine running – the correct range is 13.8–14.5 V.
- Assess the condition of the wires and terminals – lack of corrosion and a firm seat are essential.
- If in doubt, check the quiescent current consumption – it should not exceed 0.05–0.08 A.
FAQ - Frequently asked questions about electrical systems in cars
| Question | Answer |
|---|---|
| What is a car electrical system? | This is a set of components responsible for powering and controlling all electrical functions in the car – from engine starting to multimedia. |
| What is an alternator for in a car? | The alternator generates electrical current when the engine is running and charges the battery. |
| What is the difference between a starter and an alternator? | The starter motor is used solely to start the engine, while the alternator is responsible for generating energy while driving. |
| How to check if the battery is working? | Just measure its voltage – a healthy battery should have approximately 12.6 V at rest and maintain a voltage above 10 V during cranking. |
| What are the most common symptoms of car electrical failure? | Problems starting the engine, flashing warning lights, power windows not working or dimming lights. |
| Do electrical parts from one model fit another? | Sometimes yes, but the key is to match it by VIN or OEM number – this guarantees compatibility. |
| How often should you check your electrical system? | It is worth performing basic diagnostics (battery, alternator) at least once a year or before a long trip. |
Summary: Automotive electrical systems at Global Parts Automotive Store
Automotive electrical systems are the foundation of the reliability and comfort of every modern vehicle. By choosing the right parts, such as alternators, batteries, and control modules, you can ensure your car's full operational efficiency. The Global Parts automotive store invites you to browse our wide selection of original used car parts . Whether you're looking for car parts for BMW , Audi , Volkswagen , Mercedes, Mini , or others, you'll find them at competitive prices. We strive to ensure every customer finds the right parts for their car, and if you have any questions or concerns about selecting the right components, we're happy to help! Please contact us – we're here to help! For more information and interesting facts, visit our automotive blog .