I recently bought a 2008 nitro r/t. Along with other things one of the problems is that the ac does not function properly. Air only seems to be coming out of the defrost and foot well vents even when the selector is switched to anything else.
Welcome to the forum @RytheCrithpy. When you have a chance, head over to the Newbie Section (<click this) and say "Hi".
Tell us a little about yourself and your ride.
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The white arm has a nub, that needs to be moved to the inside of the cam and inserted back into the hole there for it. Once lined up press it into the hole.