PAC TATO Factory Integration Adapter Jun 25, 2014 5:10:31 GMT -6 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Tstormin (AKA Bill) on Jun 25, 2014 5:10:31 GMT -6 This is for adding an aftermarket head unit to a JBL Premium system. Just like this one:PAC TATO Factory Integration Adapter Install a new car stereo and retain your JBL amp, balance and fade controls, and Synthesis® surround systems (2003-up Toyota and Lexus vehicles) at Crutchfield.comIn the Picture, the back left harness, I dont not have(The piece with what looks like an inline fuse). Not sure what happened to it, and dont remember ever seeing it. (I Dont think it is needed to be honest)I will upload a pic upon request. $50.00