I was able to finally get the fan to kick on by disconnecting the AC pressure switch. Once I did this the fan started up and started spinning at max speed. Unfortunately I did not try this with the old fan to see if it was truly bad but the fact that it was not turning on when the car reached high temp leading the car to almost overheat tells me that it was bad.

The new fan kicks on now only when the car reaches high temp so at least I will not have overheating issues. It still does not kick on when the AC is turned on and the AC compressor clutch is also not engaging which tells me either the AC pressure is possibly to high (from the aux fan not kicking on) or to low or the worst case the compressor is bad.

Thanks for your responses so far. I am going to try and check the high and low pressure today and see if the system needs a refill.

Cheers