Thursday, December 1, 2011
On-Board Computer Installation Manual for BMW E36 Compact
The Parts Needed to Install The On-Board Computer (OBC)
On-Board Computer/Clock. It should have 2 buttons: S/R and clock. If it shows only the clock, it should be coded. If you have found one which works as OBC (shows more than just a clock) then it will work with any car, however, the computations of fuel consumption will be based on that car it is taken from. To change the settings you will have to code it.
OBC connector. There are 2 types of connectors: one for the clock with only 4 wires (first photo), and one for the OBC with 11 wires (second photo). The connector can be disassembled and additional wires can be added, or you can make your own connector from scratch, connecting each wire individually to the back of the OBC.
Turn signal lever with BC button. Fits one from sedan version as well. You can also use any other button installed anywhere else in the car instead of using this.
Outside temperature sensor B21 with connector X770. It can probably be replaced with temperature sensor from other BMW models but have not tried that.
Preparation
• Disconnect vehicle battery. You will have to remove the steering wheel and disconnect an airbag to change the turn indicator switch.
• Remove all the paneling on driver side below the steering wheel. Make sure you removed all the panels so that you can access the place where all wires go to the engine compartment (firewall).
• Remove the front panel around OBC, car stereo, air heating, etc. Depends what you have installed there it is not necessary to take it off completely. If you are able to run some wires from below steering wheel to the OBC clock you will be fine without removing everything.
• Remove the steering wheel and steering-column paneling.
download: http://kom.aau.dk/~kod/E36_OBC_Installation_instructions.pdf
