Thanks for the pic. What's the plug in on the far left for? Square
Thanks a lot for the diagrams- When I messed with it last I noticed that high on the fan doesnt work-was thinking its the relay. But maybe the plug Im identifing needs power and ground there for High speed.
If you don't have c497 connected you wont have the high side power for the blower. The Ground is part of the harness and in the picture above is right next to the purple wire. If you have Lo, M1, and M2 at the blower motor now your ground is fine.