does anyone know the way to connect one to the stock system?

there is a white wire, white wire with black stripe, grey wire, grey wire with blck stripe and two ground wires coming from the adapter.

so Im pretty much just looking for which wires connect to what.

thanks

 

You have to get a line in adapter it will tell you everything you need to know.

 

well i bought the adapter the has the female end for the rca cables.