the fog light switch, or conv top switch plugs are in the center consol... so yea, pull the consol and youll clearly see them. Of coarse you can just pry either switch out by getting a tiny flate balde under the ends and pulling up.. They have metal tabs that hold them in ( one on each end) once removed disconect the plug, and tap your wiring into the plug.
The way that i did it, way back when was..
Simply tapped a Key On Engine Off wire right off of the CCRM, Think it was #17, though im not sure, anyhow, its the green/black wire that controls the highspeed fan. I tapped into this wire then ran it straight to a 12v source, with a switch inline, to turn the highspeed fan off and on. This worked great. Probably could have used a relay in between, but for the year or two i had it working, i never had one problem with it constantly running.
Helped bring my temps way down, into the O range in NORMAL..