So you are saying? that you have the TS switch unplugged, and that you are checking pins to ground? NONE of the actual TS pins should be grounded. Only the horn wire (black) should ground. I'd have to look up anything else.........What year / model?
My mistake ... the switch side is not grounding. It is the dash side that every other pin is grounding . That may be normal since they appear to all be lighting Related ?
