Well I installed a pioneer 7700 in my 04 silverado (bose system equiped) I got the wiring harness for the truck from a local car audio shop and went home and wired it up to the pioneer harness. however when i was done and everthing was installed the HU wouldnt turn on. so i connected the power and ignition together and it worked. so for some reason the ignition wire from the truck. does anyone know if there is i have to do or modify to get an ignition wire to the HU. or am i out of luck and just runa new ignition wire???