My Conquest 12vdc BREAKER for slide is under step w/ Battery and several other** 12vdc breakers. and breakers not only trip, but go bad and require replacement w/ age. Other influences are the safety interlock RELAYS, mine tied to (IGN=ON= Slide Power=OFF). IGN MUST be OFF for slides to operate; (some I read), may have a DRIVER SEAT SWITCH, or a GROUND through the PARKING BRAKE PEDAL SWITCH?
MY slide breaker tripped twice when solenoids stuck engaged when retracting. Replacing solenoids cured issue.
(**Other = 100a main, GEN, (25a-30a STEP) Good Luck
2000 Conquest LE 6266, Class-C on 99-E450SD, 6.8, 2v, V-10