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 E81 E84 E87 E90 LCI 18d 118d 318d N47 ECU Kit DDE 8506434 CAS3 Key Automatic

PLN 1,044.95

Free delivery: Jul 15

If paid before 14:00

Part no. A4145401130

Mercedes Vaneo W414 Starter Wiring Harness Battery Ground Cable A4145401130

PLN 161.95

Free delivery: Jul 15

If paid before 14:00

Part no. A0009951033

Mercedes W204 Exhaust Pipe Connector Clamp Holder M274 Petrol A0009951033

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 5Q0959435A

Volkswagen Golf CD1 Keyless Go Module ECU Entry Control Unit 5Q0959435A

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. FH22-14B006-AA

Land Rover Discovery L319 Air Module Crash Impact Sensor FH22-14B006-AA

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. GTC055R

Mercedes W207 W212 Display Screen Android Navigation Infotainment Unit GTC055R

PLN 949.95

Free delivery: Jul 15

If paid before 14:00

Part no. VUX500103

Land Rover Range Rover L322 Radio Tuner Receiver Control Module ECU VUX500103

PLN 132.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8510284

Engine Wiring Loom BMW F30 F31 F32 330d 430d N57N Gearbox Module Harness 8510284

PLN 218.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8W0971227B

Audi A4 S4 8W A5 S5 F5 Battery Wiring Harness Rear Distributor 8W0971227B

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. A2129009622

Mercedes W212 Fuse Box Relay Rear SAM Control Unit Module A2129009622

PLN 208.95

Free delivery: Jul 15

If paid before 14:00

Part no. 7640755-8

BMW F20 116i N13 136HP ECU Module Unit Kit DME 7640755 Key + FEM + Lock Manual

PLN 2,184.95

Free delivery: Jul 15

If paid before 14:00

Part no. 9438731

BMW F20 F21 F22 F30 F31 F32 F36 Body Control Module Unit FEM LR01 9438731

PLN 617.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2049060405

Mercedes W204 Front Fuse Board Box Relay Unit Case A2049060405

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8W0907063BG

Audi A4 B9 Body Control Comfort Unit Module BCM Unit ECU 8W0907063BG

PLN 189.95

Free delivery: Jul 15

If paid before 14:00

Part no. 1K0035198C-1

Volkswagen Eos 1F Radio CD Navigation Control Unit Module 1K0035198C

PLN 284.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8506281

BMW E81 E87 E90 LCI 116d 316d 118d 318d N47 Engine ECU DDE 8506281 Manual

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8T0971035BA

Audi A5 8T Coupe Front Driver Side Door Wiring Harness Right O/S 8T0971035BA

PLN 332.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8W0971659B

Audi A4 B9 Dashboard Air Vent Wiring Loom Harnes Cable Passenger Side 8W0971659B

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 6866397

BMW F20 VDC Dynamic Adaptive Suspension System Control Unit Module ECU 6866397

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8570848

Mini Cooper One D F54 F55 F56 F57 Engine Starter Motor Diesel Bosch 8570848

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 5CU971104

VW Volkswagen Jetta A6 Mk6 Rear Bumper PDC Sensors Wiring Loom Harness 5CU971104

PLN 569.95

Free delivery: Jul 15

If paid before 14:00

Part no. 5H2Z-14B345-BA

Land Rover Discovery 3 L319 Crash Impact Sensor Air Module 5H2Z-14B345-BA

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. FPLA-14386-BD

Range Rover Evoque L538 Engine Cooling Fan Harness Wire Cable FPLA-14386-BD

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 04L911024A

Audi A4 B9 2.0 TDI DETA Engine Starter Motor Actuator Starter 04L911024A

PLN 189.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8506444-3

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 8506444 CAS3 + Key

PLN 1,044.95

Free delivery: Jul 15

If paid before 14:00

Part no. 9268706-1

BMW F01 F02 F04 F10 Rear Compartment Monitor Left Right N/O/S 9,2" Black 9268706

PLN 1,899.95

Free delivery: Jul 15

If paid before 14:00

Part no. 6955116-BAQ

BMW 1 3 Series E81 E82 E87 E88 E90 E91 Ultrasonic Sensor PDC Barriquerot 6955116

PLN 47.95

Delivery: Jul 15

If paid before 14:00

Part no. A2059060104-2

Mercedes W205 Front Headlight Headlamp Wiring Harness Cable Left N/S A2059060104

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 8W0959593E

Audi A4 B9 Front Door Control Module Unit Driver's Side 8W0959593E

PLN 123.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8585384-1

BMW X4 F26 X5 F15 N57 Diesel Engine Control ECU Kit Set 8585384 Automatic

PLN 1,673.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2474703702

Mercedes W177 W247 Solenoid Valve Line Pipe Hose Starter A2474703702

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 9136725

BMW Mini Cooper One R55 R56 Multifuse B Battery Power Distributor 9136725

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. A2059000327

Mercedes C205 Differential Lock Control Module Unit ECU A2059000327

PLN 569.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2045402410

Mercedes W204 Door Wiring Front Left N/S Door Cable Harness A2045402410

PLN 66.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8679681

BMW F45 i3 i01 Mini F60 High Voltage Connector 8679681

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2475457300

Mercedes W177 Fuse Box Relay Cover Lid Control Unit Bracket Trim A2475457300

PLN 70.95

Free delivery: Jul 15

If paid before 14:00

Part no. KT1T-19H406-CG

Ford Transit Connect Mk2 Front Windscreen Lane Camera Unit KT1T-19H406-CG

PLN 379.95

Free delivery: Jul 15

If paid before 14:00

Part no. 1K0035186AB

VW Volkswagen Passat B7 Radio CD Player Head Unit DAB Stereo 1K0035186AB

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8796289

BMW X3 G01 X4 G02 X5 G05 Battery Terminal Negative Cable Wire Wiring 8796289

PLN 123.95

Free delivery: Jul 15

If paid before 14:00

Part no. A1669005417

Mercedes X117 Communication Telematics Control Module Unit ECU A1669005417

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8N0906018BH

Audi S3 8L 1.8T BAM Quattro 225HP Petrol Engine Unit ECU 8N0906018BH Manual

PLN 1,614.95

Free delivery: Jul 15

If paid before 14:00

Part no. AC1T-9K499-FNA-1

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

PLN 336.95

Free delivery: Jul 15

If paid before 14:00

Part no. 059903143BH

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

PLN 237.95

Free delivery: Jul 15

If paid before 14:00

Part no. LR034239-2

Range Rover L405 Tail Light Lamp Wire Harness Cable Plug Rear Left N/S LR034239

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. FK72-19C166-BD

Land Rover Discovery L550 Multimedia USB SD Card Port Socket FK72-19C166-BD

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 7424109-2

BMW F32 F33 F80 F82 F83 Headlamp Headlight Xenon Wiring Cable Left N/S 7424109

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. A6421505526-1

Mercedes C219 CLS 320 CDI 224HP OM642.920 Engine ECU Kit A6421505526 Automatic

PLN 569.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2515400341

Mercedes W251 Negative Earth Battery Cable Wiring Harness Lead A2515400341

PLN 56.95

Delivery: Jul 15

If paid before 14:00

Part no. A2469009615

Mercedes W176 W246 PDC Parking Control Module A2469009615

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 82A945094C-2

Audi A1 GB Rear LED Tail Light Lamp Wiring Plug Cable Right O/S 82A945094C

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 8598806-2

BMW X3 F25 20dX Diesel B47 190HP Engine Module ECU Kit DDE 8598806 Key CAS4

PLN 1,614.95

Free delivery: Jul 15

If paid before 14:00

Part no. 9V4N-12A650-BG

Ford Kuga C394 Engine Control Unit ECU 200HP 2.5 Petrol 9V4N-12A650-BG Automatic

PLN 1,329.95

Free delivery: Jul 15

If paid before 14:00

Part no. A1729003406

Mercedes SLK R172 Roadster Soft Top Folding Roof Control Module A1729003406

PLN 141.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4G0971845A

Audi A6 C7 Fuse Relay Box Sam Control Module 4G0971845A

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2059007218-2

Mercedes GLC X253 Rear Trunk Lid Automatic Closing Lock Mechanism A2059007218

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2128270228-SEL

Mercedes W212 Roof Antenna Amplifier Shark Selenite Grey - 992 A2128270228

PLN 85.95

Free delivery: Jul 15

If paid before 14:00

Part no. A6402002770-1

Alternator Belt Tensioner Mercedes W169 W245 OM640 Diesel Holder Mounting Panel

PLN 112.95

Free delivery: Jul 15

If paid before 14:00

Part no. 7542310-7

Mini Cooper R50 W10 Petrol Engine Control Unit Module ECU DME 7542310 Manual

PLN 113.95

Free delivery: Jul 15

If paid before 14:00

Part no. 1S0919275-PHB

Audi A3 8P PDC Parking Distance Control Sensor Module Unit ECU Phantom Black Z9Y

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 3G0971689

Volkswagen Passat B8 3G Door Wire Cable Harness Loom Rear Left N/S 3G0971689

PLN 284.95

Free delivery: Jul 15

If paid before 14:00

Part no. 059911021C

Audi A4 B8 3.0 TDI CAPA Diesel Starter Motor 059911021C

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. A6519007401-1

Mercedes W212 E250CDI Blue Efficiency OM651 204HP Engine ECU A6519007401 Key

PLN 1,044.95

Free delivery: Jul 15

If paid before 14:00

Part no. 5H32-14633-AA

Range Rover L320 Door Wiring Loom Harness Cable Rear Left N/S 5H32-14633-AA

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8T0907468

Audi A4 B8 A5 S5 Gateway Diagnosis Interface ECU Data Module 8T0907468G

PLN 237.95

Free delivery: Jul 15

If paid before 14:00

Part no. 7P5971693D

Porsche Cayenne 92A Rear Door Wiring Harness Cable Left Right N/O/S 7P5971693D

PLN 379.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4H0907801E

AUDI A7 4G8 Electric Handbrake Control Module TRW 4H0907801E

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 6986987

BMW Z4 Series E85 Cable Loom Passenger's Door Wiring Harness 6986987 6986982

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. 3AA971693CB

VW Volkswagen Passat B7 Rear Door Wiring Loom Harness Left N/S 3AA971693CB

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8E0953549T-1

Audi A4 RS4 B7 Steering Column Control Module Unit 8E0953549T

PLN 522.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8T0907468AA

Audi S4 B8 Diagnostic Interface Gateway Control Module Unit ECU 8T0907468AA

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. DPLA-14C725-CA

Range Rover L405 Front Rear Seat Memory Heating Module DPLA-14C725-CA

PLN 85.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8576333-1

BMW F10 F11 520d X3 F25 20dX N47N 184HP ECU Kit DDE 8576333 Key CAS4 Automatic

PLN 902.95

Free delivery: Jul 15

If paid before 14:00

Part no. 6921979

Door Module BMW E65 E66 E67 Front Door Control Unit Passenger Side 6921979

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 6819651

BMW X5 F15 Rear Fuse Box Distribution Relay Module Control ECU Unit 6819651

PLN 85.95

Free delivery: Jul 15

If paid before 14:00

Part no. 3C0035711A

VW Volkswagen Passat B7 Hands Free Microfon Cable Wiring 3C0035711A

PLN 70.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4F0907468B

Audi A6 C6 4F Gateway Control Unit Module ECU 4F0907468B

PLN 56.95

Delivery: Jul 15

If paid before 14:00

Part no. 13720856

Mercedes W212 Negative Cable Battery Terminal Wiring 13720856

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 06K907425B-18

Audi S3 8V 2.0 TFSI DJHA 310HP Quattro Engine ECU Kit 06K907425B BCM + Key

PLN 1,234.95

Free delivery: Jul 15

If paid before 14:00

Part no. YQE500290

Range Rover L322 Engine Bay Fuse Relay Box Unit Module YQE500290

PLN 56.95

Delivery: Jul 15

If paid before 14:00

Part no. A2229003210

Mercedes W205 Head Unit Audio Player Radio Sat Nav Module A2229003210

PLN 189.95

Free delivery: Jul 15

If paid before 14:00

Part no. F1B1-12A650-AJB

Ford Fiesta Mk7 1.0 EcoBoost 140HP Engine Control Unit ECU F1B1-12A650-AJB

PLN 237.95

Free delivery: Jul 15

If paid before 14:00

Part no. 9805533-1

Mini R60 Rear PDC Parking Sensor Royal Grey Metallic - A48 9805533 SET x2

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 98661313300

Porsche Boxster 986 Rear Windscreen Heating Switch Relay 5 Pins 98661313300

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 07K903023F

Audi RS3 8P RSQ3 8U Alternator Generator BOSH 14V 140A 07K903023F

PLN 313.95

Free delivery: Jul 15

If paid before 14:00

Part no. 1K8971104F

Volkswagen Scirocco Mk3 Rear PDC Parking Sensor Wiring Harness Loom 1K8971104F

PLN 151.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2189000104

Mercedes CLS X218 Parktronic PDC Parking Assist Control Module A2189000104

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. GB3G-12A650-AA-1

Ford Ranger Mk3 2.2 TDCI GBVAJQJ 160HP Engine ECU Kit GB3G-12A650-AA Automatic

PLN 2,137.95

Free delivery: Jul 15

If paid before 14:00

Part no. LR037710-2

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

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 6801509

Wireless Charger BMW F90 M5 G30 Centre Console Phone Module Unit 6801509

PLN 379.95

Free delivery: Jul 15

If paid before 14:00

Part no. A2135407044

Mercedes W213 Door Wiring Loom Harness Cable Front Passenger's Side A2135407044

PLN 189.95

Free delivery: Jul 15

If paid before 14:00

Part no. 9229899

BMW F01 F01N F02 F10 Tow Bar Trailer Towing Control Module Unit AHM 4 9229899

PLN 569.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8E0971693L

Audi A4 S4 8E RS4 B7 Rear Door Wiring Loom Harness Left Right N/O/S 8E0971693L

PLN 75.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4K1907594CB

Audi S3 8Y VW Golf Mk8 Sun Roof Module Control Unit ECU 4K1907594CB

PLN 227.95

Free delivery: Jul 15

If paid before 14:00

Part no. 5A20559

BMW F40 F44 Transmission EGS Control Module Unit ECU 5A20559

PLN 1,187.95

Free delivery: Jul 15

If paid before 14:00

Part no. 7796127

BMW X5 X6 Series E70 E71 Diesel Battery Cable Starter-Base B+ 7796127

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 6G9T-14324-BJ

Ford Mondeo Mk4 Negative Earth Cable Battery Lead Wire 6G9T-14324-BJ

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. A1698201285

Mercedes W169 W245 Front Door Control Unit Module Right O/S A1698201285

PLN 75.95

Free delivery: Jul 15

If paid before 14:00

Part no. 9117801

Battery Bracket BMW X3 G01 X4 G02 Rear Holder Mount Carrier Support 9117801

PLN 75.95

Free delivery: Jul 15

If paid before 14:00

Part no. 9247386

BMW X3 F25 Body Control Module ECU Junction Box JBBFE III V9 Lear 9247386

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

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