2001 s40 1.9t the car has been in an front drivers side accident and I think that the ambient temp sensor is gone and some wires bare.. its just gone...I cannot get anything to work on the ac.heater dash at all, I have checked both fusses at both boxes..just fine..I almost have this car back toghether but this issue has me stummped??curt

 

have you traced the wiring diagrams? I know that's a pain, but you may get some ideas by looking at volvowiringdiagrams.com and pulling the S40's.