I'm trying to hardwire my Valentine 1 radar detector to the passenger visor vanity mirror. When I cut the end off the RJ11 connector from the V1 to wire it to the visor, there are three wires, red, black & green. The visor only has two wires, black & red. I keep playing with it but can't seem to get the radar to power up. Does anyone know what wires I should wire together?