which one of service port to fill refrigerant in my van?
on 1991 Chevrolet G Series Van (G20)

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
one with blue cap attached to the canister and orange cap attach to the pipe going lower part of the canister? Pleased advice, thank you in advance! Omie.
(2) Answers
(4) Comments
Thank you so much!

Lightsaber and Pushrod,

Thanks pal I made it, it was so easy appreciate you're help.

Again thanks to both of you.