[savage1]

I want to install a oogah horn in my 08 Silverado,but I want to review the schematics for the horn circuit first. My plan is to use the existing stock horn wire to power the coil in a add on relay for the oogah horn. The relay is going to be connected to a single pole double throw switch so I can switch between the factory horns and the oogah horn with the flip of a switch. The factory steering wheel switch would activate the coil in the relay thus working both horns independently. What color is the wire going to each stock horn? I think it may be dark green. Will this installation cause any problems with the BCM or any other circuits or functions? Did I miss any other details? I guess if I leave the toggle switch in the oogah position every time I lock the doors with the fob I'll hear OOOOGAH!