Craig, the small fuse box in your bedroom should just be some coach interior (house) 12v features. The 12v chassis devices are on circuit breakers as others have pointed out, not fuses, in the streetside forwardmost “electrical” bay. As Steve notes the one you are looking for is probably CB30 as on our ‘06 Monterey, and as the legend below implies the ignition must be on for anything along that buss to get voltage. If both sides of 30 are then “hot”, the issue is at the switch or the lamps, whose connectors and wiring by virtue of location are often exposed to potential damage.
The units may look okay but were the lamps individually tested with auxiliary 12 volts? It’s inconceivable that an experienced tech at Alliance would neither know there weren’t fuses nor where the chassis breakers were.
Joel