hot wire A/C compressor -

If I run a switch to 12v on/off for the compressor - do I risk damaging the a/c by having the compressor run all the time?

I know that in my Chevy Blazer - teh compressor runs continuously when the ac is on-

Cant seem to spend any more $ on the Radiator Fan Controll unit and timer- $250 for both - to fix intermittent ac-

thanks