Cadillac Repair: electrical, cadillac seville, secondary computer

Question
how would i know where to look for the secondary computer on a 1989 Cadillac Seville? i need to know because it controls all of the gauges for the car and right now i have no gauges.

Answer
Your most likely referring to the BCM (Body Control Module).

Question: On any of the displays is there a symbol like -c or -d or -151 or anything else.

I can provide PICTURES of the BCM location and test procedures for you to do to find the cause of your problem and correct it. E-mail me at: onlineautohelp@msn.com