Matt1616: On my Brave, there are two fuses for the HWH system in the driver's area. And I know other friends' Adventurers were the same, so try this:
One is the 15A blade fuse in the Workhorse fuse box labeled "Radio/Accessory". Lift up your dash and you'll see the WH fuse box (the other smaller fuse box nearby is put in by Winnebago). Winnie ran the power for the HWH system through the Workhorse 15A Accessory fuse.
The other fuse is a 5A blade fuse, and it's in an individual fuse holder ("in-line") by itself, buried within the cables running down from the dash by the driver's left foot area thru the floor. This is best accessed by standing outside the coach and looking in from the driver's door. You have to spread the various trunks of cable apart. I believe the 5A fuse was buried in a big trunk, behind the black corrugated plastic sheath.
On my coach, unfortunately the driver's electric window, the HWH jacks, the radio, and my air horns were all energized from the same 15A fuse on the dash. Unfortunately, I learned you cannot power up/down the window and run the jacks at the same time; it blows the fuse. -I'd like to take some of the loads off that fuse and redistribute, but haven't gotten round tuit.
Last Brave 2004 34D