Originally Posted by 01CHEEKEE
What's the antenna adaptor for? Is it necessary?
It allows you to connect the factory Jeep antenna to the back of your new aftermarket head unit. Yes, it is necessary if you want to listen to AM/FM stations.
As far as steering wheel controls go... get the Axxess ASWC adapter. It's only $69 shipped from Crutchfield, it only takes 3 wires to hook up to the Liberty, and it works like a charm. It's by far the easiest and best solution to keep your steering wheel buttons useable. (Mine is a Pioneer unit...I assume other brands will be the same).