Cadillac Repair: Installing navigation into a 92 SLS, Speedometer cable, speedometer cable, computor

Question
Hi there,

I want to install a navigation into my '92 SLS. Now here is the problem: Which of the cables at the panel is the cable of the speedometer that I can use to connect the navigation with? Can you help me on this?

Thanks!

Maurice

Answer
Hi Maurice, Without seeing the instructions for that step and what it is asking to have done I don't know how to answer your question because if I tell you the wrong wire then the computor or instrument panel might get damaged and have to be replaced. Or your navigation sytem could be damaged or inoperative. Sorry I can't be anymore help right now. Bill