Air conditioning issue

My 1989 Caprice 9C1 has recently developed an A.C. problem that I can't understand. It will work perfectly for a certain length of time and then cut off totally. No fan or anything. I never know when or if this will happen. The system was totally overhauled two years ago and still blows ice cold, so this is very surprising. Thanks for the help.

My 1989 Caprice 9C1 has recently developed an A.C. problem that I can't understand. It will work perfectly for a certain length of time and then cut off totally. No fan or anything. I never know when or if this will happen. The system was totally overhauled two years ago and still blows ice cold, so this is very surprising. Thanks for the help.

I found a bad wire connection,,oem crimp corroded lower steering column area,,,orange wire..had some tape around it ,,,