Welcome to the Nissan Patrol forum. To post a question and to see less adds on the forum then you will have to register
first. We are an easy going friendly forum so join in the conversations and feel free to ask any questions.
Become a forum sponsor for only $20 and see no adds with faster page loading times and many extras benefits.
You could just wire it via a switch on the dash with a relay and use the switch wire on the relay from the power wire on the a/c. Somewhere that may be. Sorry thats all I got atm.