The resistor is next to your blower fan; 2 phillips screws and a harness. Looks like little toaster coils when you remove it; it's fragile, so be careful. Your other factor is the switch contacts in the console.

Put your year/model rig in your profile so we can whittle down details for you in the future.

As far as the R12 to R134 conversion, there are a few folks here who have used other stuff to service up their R12 AC systems; mostly found on ebay. <img src="/forums/images/graemlins/kewl.gif" alt="" />

http://www.walkablecommunities.org/

Democracy is two wolves and a lamb voting on what to have for dinner. Liberty is a well-armed lamb contesting the vote.

**ubi apis- ibi salus**