What is the construction and purpose of wires, harnesses, and connectors?

Wires, harnesses, and connectors are elements of a car's electrical installation that connect power sources, consumers, sensors, and controllers. A typical set consists of conductive cores, insulation, covers, plugs, pins, and mounting points to the body or equipment. These parts appear in various vehicle zones, from the engine compartment to the interior and trunk lid. Their construction must correspond to the specific circuit and car equipment.

What are wires, harnesses, and connectors used for?

Wires, harnesses, and connectors are used to transmit current and control signals between car components. They are responsible for powering devices, communication between modules, and maintaining stable electrical connections. Without them, lighting, starting, charging, sensors, or onboard electronics would not work properly. Their condition also affects the speed of fault diagnosis and the reliability of installing other electrical elements.

What is the construction and function of an electrical connector in a car?

An electrical connector is an element connecting two sections of an installation or a wire to a specific vehicle component. It usually consists of a housing, contact pins, a latch, and often a seal protecting against moisture and dirt. Its function is to ensure a secure contact and the possibility of safely disconnecting the installation during service. The appropriate type of connector is important for conductivity quality, sealing, and vibration resistance.

How to choose wires, harnesses, and connectors for a specific car version?

It is safest to compare the OEM part number, interchangeable numbers, location on the vehicle, and the body and equipment version. It is also worth checking the number of pins, plug shape, harness routing, and mounting points. For elements supporting several systems, the fuel type and the presence of additional modules are also important.

What symptoms indicate wear of wires, harnesses, and connectors?

Typical symptoms include intermittent power loss, controller errors, blown fuses, unstable lighting operation, and problems with starting selected devices. In practice, insulation cracks, corrosion on contacts, and damage in bending areas are also encountered. Such signals should be immediately compared with the mounting location and the condition of the connections.

How to take care of wires, harnesses, and connectors after installation?

After installation, ensure the harness is routed correctly so it does not rub against sharp edges and is not exposed to excessive bending. It is also important to properly seat all clips, holders, and latches, and to keep the connectors clean. During periodic inspections, it is good to check the condition of the insulation and the tightness of connections in areas exposed to moisture.

Wiring Harnesses, Cables & Connectors

At the Global Parts automotive store, we offer a wide selection of original used car parts, including cables, harnesses and connectors for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen and others. The cables, harnesses and connectors we offer undergo quality control so that you can be sure that you are receiving a top-class product.

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Audi A3 8P 1.2 TFSI CBZB Alternator Wiring Harness Cable Loom 1K0971349JQ

€23.95

Part no. 8606445

Wiring Harness BMW F20 F21 F30 LCI Motor Sensor System Module 1 8606445

€23.95

Part no. A6395406509

Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6395406509

€23.95

Part no. 9253111-2

BMW F20 F21 F22 Positive Plus Pole Battery Blow Cable 9253111

€23.95

Part no. 7843338

Engine Wiring BMW F10 M5 F13 M6 Valvetronic Servomotor Cable Loom 7843338

€37.95

Part no. BK3T-15K868-EB

Ford Transit Mk8 Rear Bumper Parking Sensor Wiring Loom Harness BK3T-15K868-EB

€23.95

Part no. A1645402408

Mercedes ML W164 Rear Door Ribbon Electrical Cable Wiring Right O/S

€23.95

Part no. 8638585

BMW F20 F21 F30 F31 LCI Cable Alternator-Starter-Base B+ 8638585

€23.95

Part no. 7198731-3

Mini R50 R52 R53 Headlight Headlamp Plug Wiring Harness Cable Left N/S 7198731

€23.95

Part no. A2711500420

Mercedes W204 M271 Solenoid SOLV Valve Wiring Harness Petrol A2711500420

€23.95

Part no. A9079051202

Mercedes Sprinter W907 Battery Wire Negative Lead Cable A9079051202

€23.95

Part no. LR052994

Land Rover Discovery 4 L319 Rear Parking Sensor Wiring Loom Harness EH2215B484CB

€56.95

Part no. A1644407110

Mercedes W164 Wiring Loom Cable Harness Door Rear Left Right A1644407110

€23.95

Part no. A0001502780-1

Mercedes W203 CL203 W204 M272 Petrol Ignition Coil Cable Connector A0001502780

€66.95

Part no. 8K0971035AR

Audi A4 B8 Front Driver's Door Wiring Harness Loom Electrical Cable 8K0971035AR

€23.95

Part no. 06E971627N

Audi A4 B8 A6 C7 A7 C7 4G Fuel Injector Wiring Cable 3.0 TFSI 06E971627N

€23.95

Part no. A2075403434

PDC Wiring Mercedes W204 W207 Parktronic Parking Sensor Cable Rear A2075403434

€23.95

Part no. 7L5971095C

Porsche Cayenne 9PA 955 Front Bumper PDC Park Sensor Wiring Harness 7L5971095C

€37.95

Part no. 1439743

BMW E46 X5 E53 E60 E65 X3 E83 Z4 E85 Z3 Cable Alternator Starter 1439743

€23.95

Part no. 9325917

Door Cable BMW F36 Rear Left Right N/O/S Wiring Harness 9325917

€23.95

Part no. 7198732-5

Mini R50 R52 R53 Front Headlight Headlamp Wiring Harness Cable Right O/S

€23.95

Part no. 6C1T-14A120-AD

Ford Transit Mk7 Starter Motor Wiring Cable 2.2 TDCi 6C1T-14A120-AD

€23.95

Part no. 8678974

Engine Cable BMW F40 X1 F48 Mini F55 F56 Injector Wiring Loom Harness 8678974

€32.95

Part no. 8S0915181A

Audi TT FV HV Battery Negative Terminal Cable Harness Loom Wiring 8S0915181A

€23.95

Part no. 4G5971085AE

Audi A6 C7 Rear Bumper PDC Parking Sensor Wiring Loom Harness 4G5971085AE

€51.95

Part no. A9075401205

Mercedes W907 Starter Wiring Battery Alternator Cable Harness Loom A9075401205

€32.95

Part no. 6904165

BMW X5 E53 Front Dashboard Centre Console Lighter Wiring Loom Harness 6904165

€23.95

Part no. 9352574

Mini Cooper F56 Wiring Loom Front Left N/S Door Cables 6809486

€23.95

Part no. 2T1T-14A280-CG

Ford Transit Connect 1.8 TDCi Battery Positive Cable Clamp Wiring 2T1T14A280CG

€23.95

Part no. 9335291

BMW F20 Front Door Wiring Loom Harness Cable Driver Side 9335291

€23.95

Part no. 7823731

BMW E84 E90 E91 LCI 320xd N47 Cable Alternator Starter Base B

€23.95

Part no. 4F0971547

Audi A6 C6 Cable Wiring Loom Heater Matrix Air Conditioning Cable 4F0971547

€23.95

Part no. 5G0945096Q-1

Volkswagen Golf 5G Rear Tail Light Wire Plug Socket Cable Right O/S 5G0945096Q

€23.95

Part no. A1765405608

Mercedes-Benz A-Class W176 Rear Right Door Wiring Cable A1765405608

€23.95

Part no. 9314837

Wiring BMW X5 F15 M Sport Rear Park Assist PDC Wiring Harness Loom 9314837

€61.95

Part no. A2055409309

Door Wiring Mercedes W205 C253 Passenger Side Cable Harness Loom A2055409309

€23.95

Part no. 5K4971694AJ

Volkswagen Golf Mk6 Door Wiring Loom Harness Rear Right O/S 5K4971694AJ

€23.95

Part no. 8636069

BMW F20 F30 LCI B48 Engine Gearbox Module Wiring Cable Loom Harness 8636069

€85.95

Part no. 8574024

Engine Wiring BMW F30 F31 335dX N57Z Automatic Gearbox Cable Harness 8574024

€37.95

Part no. A1645400436

Mercedes ML164 Alternator Wiring Starter Motor Harness OM642 A1645400436

€28.95

Part no. A2125402705

Mercedes W212 Rear Suspension Level Sensor Wiring Loom Cable Harness A2125402705

€23.95

Part no. 80A971687H

Audi Q5 FY Rear Door Wiring Harness Loom Cable Left Right N/O/S 80A971687H

€37.95

Part no. 8P0971679K

Audi A3 S3 8P Dashboard Glove Box Wiring Loom Cable Harness 8P0971679K

€23.95

Part no. 2992478-3

Plug Socket BMW X1 E84 Rear Light In The Side Panel Right O/S Wiring 6984754

€80.95

Part no. 7835548

BMW 5 6 Series E60 E61 LCI E63 E64 M5 M6 Earth Cable Starter Battery 7835548

€26.95

Part no. A6511590246

Wiring Cable Cover Mercedes W204 W212 W906 OM651 Engine Duct Bracket A6511590246

€23.95

Part no. A1715408405

Mercedes R171 Seat Adjuster Wiring Loom Harness Driver Side A1715408405

€80.95

Part no. 8K0971228H

Audi A4 B8 3.0 TDI Starter Alternator Wiring Loom Cable Harness 8K0971228H

€23.95

Part no. A2034404913

Mercedes-Benz CLC CL203 Rear Tailgate Boot Lid Wiring Harness Loom A2034404913

€23.95

Part no. 9360357-1

Door Wiring Mini F55 F56 R60 Rear Right Left N/O/S Harness Loom Cable 9360357

€23.95

Part no. 7641652-1

Engine Wiring BMW F10 F31 F32 N20 Engine Sensor Module 1 Harness 7641652

€47.95

Part no. 8593105

BMW G30 G11 G14 Diesel B57 Wiring Glow Plugs Module Wiring Harness 8593105

€32.95

Part no. 6928975

Door Wiring Loom BMW E63 E64 Harness Passengers Side 6928975

€23.95

Part no. 9217004

Battery Cable Plus BMW X5 E70 E70N LCI X6 E71 Positive Pole 9217004

€23.95

Part no. 9243559

BMW X6 Series E71 Cable Loom Door Rear Left Right N/O/S Wiring Harness 9243557

€28.95

Part no. A1635403110

Mercedes-Benz M ML W163 Rear Left Right Door Wiring Loom Harness A1635403233

€23.95

Part no. 3C8971694AN

Volkswagen Passat CC Door Wiring Harness Loom Rear Right O/S 3C8971694AN

€28.95

Part no. 8611289

Mini Cooper S R56 JCW Coolant Thermostat Adapter Wiring Cable 8611289

€28.95

Part no. 8507906

BMW 1 3 F20 F21 F30 Engine Gearbox Wiring Harness Glow Plug Module 8507906

€23.95

Part no. 9259823

BMW E92 Front Door Wiring Loom Cable Harness Passenger Side 9259823

€23.95

Part no. 9339823

BMW X3 G01 G11 G12 G30 G31 Battery Positive Terminal Pint Jump Start 9339823

€23.95

Part no. 9365054

BMW F30 Wiring Harness Loom Rear Trunk Lid Boot Tailgate 9365054

€32.95

Part no. 8654632

BMW F40 F44 F45 Mini Cooper F55 F56 Engine Starter Motor Positive Battery Cable

€23.95

Part no. KK3T-15K868-DCC

Ford Transit Mk8 Rear Park Distance Sensor Wiring Harness Cable KK3T-15K868-DCC

€28.95

Part no. A2044404732

Mercedes W204 Estate PDC Wiring Rear Bumper Parking Sensor Cable A2044404732

€32.95

Part no. A2075409334

Mercedes-Benz E-Class W207 Cabrio A207 Battery Ground Cable Wiring Mass Lead

€23.95

Part no. 8T0915181

Audi A4 RS4 B8 Battery Terminal Negative Cable Loom Harness Wiring 8T0915181

€23.95

Part no. A1645403706

Wiring Mercedes X164 Dashboard Lower Control Panels Switch Harness A1645403706

€23.95

Part no. 9243637

BMW X3 F25 Rear Bumper PDC Wiring Loom Parking Sensor Cable Harness 9243637

€66.95

Part no. 6975069

Mini Cooper One R50 R52 R53 Cable Door Right Wiring Harness Loom 6975062

€23.95

Part no. A6397600340

Mercedes Vito W639 Door Handle Cable Catch Bowden Cable Rear A6397600340

€23.95

Part no. 5G0971104L

VW Volkswagen Golf Mk7 Wiring Loom PDC Rear Harness Parking Sensor 5G0971104L

€28.95

Part no. 9186655

BMW 3 Series E92 Front Right O/S Driver Side Door Wire Wiring Loom 9186655

€23.95

Part no. 9243645

Battery Cable BMW X3 F25 Wire Lead Positive Alternator Starter B+ 9243645

€23.95

Part no. A2514402009

Mercedes W164 Front Left Right N/O/S Door Wiring Loom Harness A2514402009

€23.95

Part no. 4F1971687S

Audi A6 C6 Rear Door Wiring Left Right N/O/S Harness Loom Cable 4F1971687S

€23.95

Part no. A1765401602

Mercedes W176 Rear Bumper PDC Wiring Parking Sensor Loom Harness A1765401602

€23.95

Part no. A2055409591

Mercedes W205 Door Wiring Loom Harness Cable Rear Right Left N/O/S A2055409591

€51.95

Part no. 5G4971694T

Volkswagen Golf Mk7 VII 5G Rear Door Wiring Loom Harness Right O/S 5G4971694T

€23.95

Part no. 9141446

BMW E93 Cabrio Convertible Hydraulic Pump Power Supply Cable 9141446

€23.95

Part no. LR036132

Range Rover L405 Engine Wiring Loom Harness Cable 4.4 Diesel CK52-9H589-AC

€218.95

Part no. 7516404

BMW E60 Cable Starter Generator Alternator B+ Base Wire Harness 7516404

€23.95

Part no. 8580165

Mini F54 F55 F56 F57 F60 B47 Wiring Harness Engine Glow Plug Module 8580165

€28.95

Part no. 7810863

Battery Cable BMW X3 F25 Wire Lead Positive Alternator Starter B+ 7810863

€23.95

Part no. 8P4945095E-3

Audi A3 8P Trunk Lid Tail Lamp Light Wiring Cable Rear Left N/S 8P4945095E

€23.95

Part no. 8631672

BMW 1 3 Series F20 F30 LCI M140i 340i Engine Gearbox Module Wiring Loom Harness

€94.95

Part no. 7473684

Door Cable BMW F25 F26 Right O/S Wiring Loom Harness Handle Light Lamp 7252538

€23.95

Part no. A1695407405

Mercedes W169 Wiring Loom Cable Door Front Left Right N/O/S A1695407405

€23.95

Part no. 7807802-1

BMW X5 E70 LCI X6 E71 N57 N57S Cable Alternator Starter Base B Wiring 7807802

€23.95

Part no. A2055401900

Mercedes W205 Parking Sensor Wiring Rear Bumper PDC Loom Cable A2055401900

€47.95

Part no. A6395407809

Wiring Loom Mercedes W639 Vito Cable Sliding Door Rear Left N/S A6395407809

€23.95

Part no. 9264636-1

BMW 1 3 4 F20 F30 F32 1 Driver Side Seat Wiring Loom Electric Harness 9339286

€23.95

Part no. A2055404913

Mercedes W205 Wiring Cable Harness Center Console Ambient Lightning A2055404913

€28.95

Part no. 8R0971035AM

Audi Q5 8R Door Wiring Loom Harness Electrical Cable Driver's Side 8R0971035AM

€32.95

Part no. 6934095

BMW 7 Series E65 E66 Door Wiring Harness Rear Right Left N/O/S

€23.95

Part no. A2124405533

Mercedes W212 Wiring Loom Cable Door Front Left Right N/O/S A2124405533

€23.95

Part no. A0009051811

Mercedes W206 Negative Batery Cable Wiring Harness Minus Pole A0009051811

€42.95

Part no. A2054400534

Mercedes C205 Bumper PDC Wiring Loom Rear Parking Sensor A2054400534

€66.95

Part no. 7P6971694F

VW Volkswagen Touareg 7P Door Wiring Harness Rear Left Right N/O/S 7P6971694F

€23.95

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