Would have been built for R12, can be converted to R134a.
Answering "Where do you add freon to your air conditioner in your ford ranger?"
R-12 freon....
which is the air conditioner relay on a 99 ford ranger
45
R-134A
With a can of freon
The 2002 ford Ranger uses type R134 Freon. The Freon is added in the low pressure port of the ac system.
R134a
The system will take 30 ounces of R134a freon.............
R-134
R-134a
R-12