View Full Version : 11 button OBC conversion

10-23-2005, 11:32 PM
I want to change out my 11 button obc for a 18 button obc which i just purchased, i have noooo knowledge about electrical wiring and all that crap *wiggle* , so i wanted to know if anyone here knows/or has done it to their car and if they could do it to mine, i would pay you ofcourse lol

10-24-2005, 12:14 AM

10-24-2005, 08:29 AM
where did you get your obc and did it come with the necessary harness?

10-24-2005, 02:01 PM
i got it off ebay some of them come with the harness and some dont, you may wanna call pacific bmw or go to a dealership im sure theyll have it...nowww u wudnt b interested in installing it for me wud u :rolleyes:

10-25-2005, 04:27 PM
i haven't tried one yet but I 've read the diy a couple times. It sounds like the hardest part is fabricaring/modifying a pin to fit the connector behind the cluster. Overall it sounds easily doable, but I'd want to try on mine first. Maybe after I can help you out if you still need it.

10-25-2005, 05:36 PM
what exactly is an OBC? I know that sounds n00bish, but I am a n00b... sorry!

Justin e36
10-25-2005, 07:44 PM
OBC = on board computer. The thingy that displays temperature, time, and performs various calculations based on the information fed to it from the instrument cluster.

10-26-2005, 12:19 AM
Ive owned 2 bmws in my life time and im only 17 so im not a nOOb bud, n e ways, i sold mine 11 button obc for $150 which was too good a deal to pass off, but now im left with a spare 7 button obc that i had from before, and nowwww i just learned that you would need a different setup or more parts to do the 18 button swap... :(

Justin e36
10-26-2005, 01:32 AM
Euro... who called you a noob?

Anyway, yes you need a second harness and lots of wire tapping to do the 18 button conversion.


10-30-2005, 09:56 PM
bump..come on would it work

Justin e36
10-31-2005, 04:31 AM
Yes it would work. Look at the link posted by Koncise above.

11-01-2005, 08:25 PM
Will the 18 button work with only the one harness for the 11 button...obviously without the extra features found on the 18....

Justin e36
11-01-2005, 08:58 PM
Yes. It will work like an 11-button. Extra features will not work.