Alternator gauge question

Instrument lamp fuse gets its power from the headlight switch. Pull the switch to at least the park lamp position and check that fuse again.
Thanks RedFish, I tried that with no luck. The weird thing is that at one point I had power on both sides of that fuse when Key was on but light switch was off. I think the PO has done some creative wiring and it is failing. Thanks everyone else for all the tips & Ideas. I'll be in the Garage for a while just trying to figure it out and cleaning up the bulk head wire connections.