Trying to figure out if my truck was converted to R134a from R12. It looks like.theblow side is a R134 quick connect adapter but the high side is still R12? It's been a long time since I messed with AC. I've read a couple conversion threads.

Also what's the best way to access and clean the evap could? Dash or engine bay?

 

The top connector is R134a. The bottom one is aftermarket, not factory Ford.

 

Just realized I posted this on the wrong boards. Should be 1980-1986