Fished this weekend and had no nav or running lights. Switch at console showed they were on. Swapped the fuse, still no work!
Ideas before i go to dealer?

Check for power at the receptacles with test light or meter.

+1, my Ranger had quick connects at the light receptacle i would unplug it and test thêre. I asume you checked the bulbs.

Didn’t check bulbs because both lights were out. I’ll pick up a meter

Look under the console in the vicinity of the back of the switch to see if there are any terminated wires in the harness that were pulled off the switch terminals. Since neither lamp is working, I agree there's less chance that two bulbs are out, and I'd also say that there's also less chance that two contacts inside the switch failed simultaneously. However, a disconnected power feed fails both lamps, making that good fuse a moot point. At least one center-tap terminal on the NAV light switch will be +12V. You should measure that 12V source point. (Get a Ground from any obvious point in the electrical system under the console.) My guess is that the 12V won't be there, causing both lamps to be out. Start tracing that (probably red) wire back toward the fuse and other wiring path to the battery. You'll discover the defect along the way.

Thanks, I’ll post results