Following the instructions on http://www.bmwe34.net/e34main/upgrade/OBC.htm I have attempted to replace the digital clock/ temp display in my 1992 525i with a full OBC. Like the instructions suggest, I found no power at pin 17 when I could not get the computer to come up at first, so I joined the wire coming from pin 17 to the wire leading to pin 9 as instructed. I now have 12V at pins 6, 8, 9, and 17. I know my ground is good on the connector because thats what I used to check for power at the other pins. Despite this, my computer still refuses to turn on. To see if I may have purchased a faulty computer, i decided to try the one in my brother's car (same year/model), which i know to be operational, but got nothing. To make things worse, after re-installing the OBC in my brothers car, his is now playing dead! WHOOPS. What have i done? Is there some sort of trick to make these fire up after they're disconnected?! PLEASE HELP
