Schematic for the wiring harness which is relatively simple. I have the ACC override switch so that when the car is sent for wash/service the computer wont turn on or off repeatedly. The monitor is permanently powered but will go into standby when there is no signal from VGA. The amplifier is just like other […]

OBD work ELM 327 (version 1.3a) interface built and tested ELM 327 Schematic – should apply to most BMWs OBD interfaces pictured together, on the left is the EDIABAS-INPA interface and ELM 327 on the right. Offset is USB to RS232 interface which is used with the laptop, the carputer has two native serial ports […]