Fuse 27 blowing. No blinker/ overhead computer

[fifty]

2002 f350 cclb

Drove to Vegas yesterday... Headache. Blew rear pinion seal...steering box decided to really show its dead spot... And then...
While in Bakersfield getting the pinion seal replaced, the blinkers stopped working and the overhead trip computer screen went dark.

Found fuse 27 blown. Replaced it with another 15 amp... Everything was fine.

Fuse blew again about 50 miles later. It was about 92 degrees out.

I am stuck in Vegas with out any real tools for diagnosis. Anyone have this problem before?

Anyone know what else fuse 27 controls so I can try to look into this?

Thanks!