Hey Tom
Unfortunately , this thing wasn't that modern , and there was a single din in the place of the odd shaped stock radio that didn't work to boot so I wouldn't even know. In my schematic , it shows the colors of all the wires I'm looking for , I'm just not sure which one it is ! For example , am I looking for the VSS signal wire , the return , or the pulse that goes to cruise control ?? I am guessing it's the signal wire but don't want to go ahead and hook it up only to find I burned something out !