A/C Question/Help

[56 Hauler]

I am restoring a family owned and built 1965 Chevy truck with a 5.3 LS engine. The entire wiring harness for this vehicle was hacked up to almost nothing so I purchased a Painless Wiring harness #60617. Everything has gone together pretty effortlessly and with the help of many of the great people on this forum it fired up and has run great on the first try.
Now I've run into a problem I can't seem to figure out.
I installed a Classic Air "Perfect Fit in dash A/C unit complete with everything to have air conditioning, it works okay when hooked up per classic instructions but the Painless harness is designed to work with 2 electric fans and when the a/c system is hooked up as instructed and the a/c is turned on the fans do not come on and the high pressure switch shuts the compressor off. With my scanner hooked up it shows the a/c request turns on and off as it is supposed to but it never turns either the compressor or fans on. Trying to trouble shoot it I can't find any power out of either fan relay or a/c relay when turning the system on.
I've disconnected the H2o sensor and both fans turn on in the default mode so I'm really scratching my head, can any one help me ? Thanks