i have a 91 camaro rs with the stock 305 and i have bought a cd player with a navigation system on it and it says i need to splice into the vss wire... i dont have any idea what or where it is... also where to hook up the reverse wire

 

if its an auto, the reverse wires are on the selector switch on the shifter, under the console, not sure of the colors of the top of my head. The VSS wires are under the passenger side dash. tucked up into the dash is the computer, and attached to it is a yellow box, about the size of a pack of playing cards, there is a 2 wire plug on it with a purple and a yellow wire, they are the wires going to the speed sensor.