I am working with a 2006 Lariat supercrew, i have the factory audiophile, subwoofer and radio, both purchased on ebay. I have been able to get the wire from under the backseat and hook it up, but in the dash I do not have any other connectors but the one main connector. I located a small 4 pin male connector but it does not look right for the radio. Can someone tell me where i can located the connectors, I have to beleive that if the one is under the seat the others must be there some where. A picture of layout of the radio cavity would be helpful

 

IIRC, there was a post with a pic showing it taped back on the drivers side hiding behind some of the steel support structure.

 

I guess it is possible they deadhead the connection from the rear seat since I can not find anything under the dash, do you know of another way to get this hooked up

 

You can buy Metra's reverse harness and run the signal and turn on wires yourself and tap them into the rear stock harness.