Many problems!
By pulled the dash did you literally tear out the whole thing? Some better background might help people aim you in the right direction. Sounds like you got a real mess and there's note enough information here to even get started.
i did the indiglo gauges and when i pulled my cluster out i accidently tore the printed circuit in the back a little. that messed up everything. I had to delicately use wires to complete the broken circuits and then electrical tape everything up really good. if there is a circuit on ours then maybe you did that? otherwise it sounds like you have a grounded wire somewhere, what were you messing with to take your dash out?
Bang no hvac lights or instruments. my warning lights work as well as blinkers but thats it. I used a multimeter and there is no power to the yellow and grey wires there. Anyway my whole under dash and radio hvac is all tore out looking for wiring problem any help would be a help. 

