Okay well i have gotten everything to do an aftermarket headunit... ive done the wiring for the harnesses with the twist caps and plugged everything in to test (alpine headunit) and only the radio works. the ipod does not work with the usb or the aux input and CDs dont play. and on top of that, there is NO ROOM for the headunit to go in because of the caps holding the wires together. people say search or a DIY because there are some of them here but i cannot find anything that has to do with installing an aftermarket headunit. any help would be appreciated!