The OBC is a computer function in the car's computer, it is accessed through the instrument cluster. It is not a little box in the car that can be removed, nor is it located in the cluster or any other specific location.
Also, you can buy silver trim for your cluster on eBay. There is no need to upgrade unless you want a different color leather on it.
I think you should carefully read over the OBC hack, you seem to not fully understand how this hack works. It is a big undertaking if you don't understand it, you will have a lot of trouble. I am not trying to mean, just helpful.
Best of luck with you Modifications!
Porscha
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