how would i wire an aftermarket hu to my 07 tc aux port, on the back of the hu i have to connect an rca as aux and obviously the other tip just fits into a cdplayer, ipod, etc, but how cud i tap into the stock aux so i cud still plug into to it

 

bump

 

not that I know off for direct wiring unless u know the diagram of both the stock aux port and headunit. best way is not to use it but just route an RCA Y to 3.5mm audio hack cable from back of the head unit to the center console.