Newbie here try and help a litte The relay for the a/c i will agree with eveyone on have replaced my far share at the shop its in the underhood relay box marked magnetic clutch not sure what the abrv. for the relay is but its marked mgn clutch something to that effect take the old relay into...
I have done alot of remote starts for customers i did one on my wifes 04 v8 limited for her last year works great i use bulldog remote starters http://www.bulldogsecurity.com rs82-1 and there 791 bypass which reqs. a key inside the module i just get the customers valet key very simple install...