763 G series AC unit troubleshooting

[CoreyTroy]

I recently changed the main drive belt on my 763, but since then there is no air blowing, or AC working inside the cab.
I noticed 2 x wires in the rear.
A Red wire going to the compressor, and a blue wire that is terminated to nothing.
The blue wire looks like it goes to the AC pressure switch, but as it does not terminate anywhere in the rear, I don't know if this is the issue or not.

 

[foton]

this is just a guess ,but if you can not find the other end to connect to ,could it just go to ground to make a complete circuit? really you need to find a wiring diagram to confirm where it is supposed to go. but look around at places the wire streches to on the block in case it is just a ground ,should have a connector on a bolt with no wire on it. just a guess.

 

[CoreyTroy]

I did try connecting it to ground, but it did nothing.

I feel it is a simple fix, and more related to the power to the fan, and the fan blowing in the cab nor AC works.

It happened after I changed the main drive belt, which was no where near the AC unit, except for losing off the compressor and re-tensioning again.
I also tested continuity to the AC/fan which was good.
Maybe I need to check voltage to the switch also.

 

[CoreyTroy]

After some more searching around, I think my issue is more to do with the actual wiring to the fan/blower than the AC compressor or pressure switch.
Anyone have and pics of their 763 or similar model of the cabin fan wiring, they could post to assist?