[NC_John]

[QUOTE=Custom 68;8288727]I am trying to remember but I thought the fan signal was actually negative (ground) rather than the 12 volt positive. So they get wired up differently. I think I have 12 volts going straight from my battery (fused) then the ground comes from the relay which is tripped by the PCM. Now I am going by memory and it has been 12 years since I did my original so I may have my self crossed up. I just remember something was different than normal. I will do some looking and maybe find something tonight in my notes.
Does any of this rambling sound right to any of you real ls geniuses?
Dave[/QUOTE

you can certainly do it that way, that's how my trinary switch got wired, but with speartech, they provided both the + and ground wire from their harness.