Sorry, I don't remember the color(but that sounds familiar? I seem to recall brown being at least one of the colors...there is a harness that connects the blower, relays, and transistor together...and I think the main power lead feeds the relays? I don;t remember exactly so don;t quote this)... Ill see if I can find the wiring because it's all been removed from the truck....
it is on the rave wiring diagram....