how do i reconnect the a.c on my renault clio 1998 mk 2?

i recently fitted a stereo in my clio but had to feed a wire down to connect my ipod i knocked a wire out with is now comming out from under the dash and the a.c button no loner works but i dont konw were it connects and i am unable to take off the dash any ideas guys ??

hot in the sumer
June 2009