Newbie thinking about diving into a '65 GMC 1000

[jtrichard]

Next to the dimmer switch are two wires orange and a white should be a plug there unplug and put test light on both wires (coming from dash) (one is ground only when the switch is turned and the other is hot all the time) If no light do one wire at a time orange should be hot if no power then look at fuse box .... to check switch find 12 volts hook test light to that and the white wire turn the switch and see what happens ( fuse should be second from the bottom STOP/DOME)