dash lights issue

The aftermarket gauge light wiring is attached to the side of the fuse that is hot without the fuse in place - I believe that it is fed by a wire that goes from the headlight switch to the INST location in the fuse box. There is an inline fuse for the aftermarket gauge wiring so that the power for the aftermarket gauge lights does no go through the factory fuse at all (to avoid overloading it). The other side of the fuse is attached to 5 or 6 factory orange wires (two connectors) that feed all the original dash lights - cluster, radio, heater controls, shifter position light etc.