its very easy to install. 4 wire on one side and a set of RCA jacks (for you amp to plug into) you connect the wire to the (+) and(-) on the right side and left side speaker wire. that what feeds the power for the rca's to work. i have a few extra if you want one. i keep them on hand for stock Navi set ups. i put one in my wifes car and it was perfect. just let me know. looking about 35 bucks shipped. once you see it you see its pretty easy to install.