I have an 04 silverado, and want to listen to the music on my phone through my truck speakers. Has factory radio but no aux input on the face. I would get a jensen flip out screen my buddy has for cheap, but he doesn't know how to hook it up to where the steering controls still work. In the back seat there is radio controls with headphone plug for someone to use radio if I happen to use the cd player up front. Will that work as aux input? If not any suggestions?