im trying to put the after market radio in my 96 dodge dakota i have the radio wiring hooked up to the back of my jvc and i have the wiring harness kit my question is, is that on the wiring harness there 2 orange wires and a brown wire comming off but there is no orange or brown wire to connect it to on the back of the jvc unit and also when i pulled out my stock unit there was a big silver wire bolted on to the back that i had to unscrew to take it out what do i do with that wire? plz someone help