I was going to have the local audio store install an aux in. But they say they only sell PAC and that its top of the line. I've read here that Blitzsafe and P.I.E. are two that work with the TL but couldn't find anything about PAC. All I want is a 3.5mm input that uses the XM button (I dont use XM) and I dont have Nav. Will PAC work with the my car? Also would this be easy enough to do myself?