Originally posted by cutlassrebel
The one on the blazer only has one prong instend of four like yours. I brought it to the shop and powertested it and seem to be fine, medium was a little lower than it should be but the readings came out fine. I'll look at the wiring and get back to ya'll. Thanks for the help.
if its only got 1 prong then youer not checking the right thing.if it dont have 4 prongs then it cant control 3 dif. fan speeds, every time you change speeds it changes to a dif. prong.