Cooling Fan Not Running

[silverswitch]

Hello all, just looking or a little help here. I browsed through some previous posts on this topic but couldn't find what I was looking for. Basically cooling fan will not turn on when engine is too hot and will also not turn on when AC is on. I replaced Cooling Fan no. 2 relay in the fuse box on driver's portion of the car thinking that was the issue. No go. I tested the fan by connecting directly to battery and it spins so I think the fan is good. I believe the manual stated that a faulty temp sensor can cause this so I replaced that as well. No go. At this point the only thing I know I haven't replaced is the Cooling fan no. 1 relay and the cooling fan resistor. If any of you have any specific threads to reference that I may have missed or some words of wisdom here I'd really welcome it. I'm coming dangerously close to just hard wiring this fan to a switch (I will regret it). Thanks.