BMW I-BUS & K-BUS
Technical Reference

K+DCAN USB Cable BMW INPA FTDI Best Seller

Professional K+DCAN USB diagnostic cable with FTDI chip, compatible with BMW INPA, NCS Expert, WinKFP and EDIABAS. Essential for E-series BMW full diagnostics.

BMW 20-Pin OBD2 Diagnostic Cable Essential

BMW-specific 20-pin to OBD2 adapter cable for older E-series models (E30, E34, E36, E39). Required for pre-OBD2 diagnostic access.

ELM327 USB OBD2 for BMW

ELM327 USB OBD2 scanner compatible with BMW. Works with INPA, Carly and other BMW diagnostic software. Reads and clears fault codes on all OBD2 BMW models.

BMW ENET Ethernet Cable OBD2 F/G Series

BMW ENET (Ethernet to OBD) interface cable for F-series and G-series BMW. Required for E-SYS coding, firmware updates and advanced diagnostics on modern BMW.

BMW IBUS Interface USB Serial I-BUS

BMW I-BUS / K-BUS USB serial interface for accessing the comfort bus network. Used for retrofitting, module programming and I-BUS protocol analysis.

CP2102 USB to UART Serial Module

CP2102-based USB to TTL serial adapter. Commonly used for direct ECU communication, serial debug consoles and Arduino/microcontroller projects.

MAX232 RS232 TTL Converter Module

MAX232-based RS232 to TTL level converter. Required for interfacing modern microcontrollers with RS232 serial ports found in older BMW diagnostic equipment.

TH3122 LIN Bus Transceiver LIN Bus

TH3122 single-wire LIN bus transceiver IC. Used in BMW LIN bus networks for seat modules, mirror controls, interior lighting and other body electronics.

Arduino Nano V3 CH340

Arduino Nano V3 with CH340 USB chip. Compact microcontroller board ideal for BMW I-BUS sniffers, CAN bus loggers and custom automotive projects.

Arduino Uno R3 CH340

Arduino Uno R3 with CH340 USB chip. Popular platform for prototyping BMW bus interfaces, relay controllers and sensor reading projects.

Raspberry Pi Zero 2W

Raspberry Pi Zero 2W — low-cost quad-core Linux board. Perfect for building a standalone BMW OBD2 data logger, GPS tracker or always-on diagnostic node.

Breadboard & Jumper Wire Kit

Full breadboard and jumper wire assortment. Useful for prototyping BMW bus interface circuits before soldering to a permanent PCB.

Capacitor Kit Assorted

Assorted electrolytic and ceramic capacitor kit. Essential for decoupling and filtering in automotive electronics repair and custom BMW module builds.

Resistor Kit Assorted

Large assorted resistor kit covering common values. Useful for pull-up/pull-down networks in CAN bus, I-BUS and LIN bus interface circuits.

1N5819 Schottky Diode

1N5819 Schottky rectifier diode. Used for reverse polarity protection and flyback suppression in BMW relay and motor driver circuits.

BC547 NPN Transistor

BC547 general-purpose NPN transistor. Common in BMW comfort module circuits and useful for switching relays in custom automotive builds.

LCD 1602 I2C Display Module

16x2 character LCD with I2C backpack. Great for displaying live BMW OBD2 data, sensor readings or diagnostic output in DIY dash builds.

Digital Multimeter Auto Range Must Have

Auto-ranging digital multimeter. An indispensable tool for BMW electrical diagnostics — measuring voltage, resistance and continuity on body wiring harnesses.

Soldering Iron Kit 60W

60W adjustable soldering iron kit with stand and accessories. Required for repairing BMW PCBs, soldering connectors and building custom interface boards.

Logic Analyzer 8-Channel USB Recommended

8-channel USB logic analyzer compatible with PulseView/Sigrok. Ideal for capturing and decoding BMW I-BUS, LIN and CAN bus signals at protocol level.

DSO138 Oscilloscope Kit

DSO138 DIY digital oscilloscope kit. A budget-friendly tool for visualizing electrical signals on BMW sensor lines, injectors and ignition systems.

OBD2 Female Connector 16-Pin

Standard 16-pin OBD2 female connector. Use it to build custom BMW diagnostic cables, breakout boards or pass-through logging harnesses.

ISO DIN Car Radio Connector Harness

Universal ISO DIN radio wiring harness adapter. Standard connector for BMW head unit replacement and aftermarket radio installations.

BMW Radio ISO Adapter Harness BMW Specific

BMW-specific ISO wiring harness adapter for radio replacement. Preserves factory steering wheel controls and amplifier integration on E-series models.