so, i thought i would post here to offer my findings for future reference ....
after accessing the furnace unit (below the oven) i quickly found the problem .... the wiring to the unit runs under the metal frame, between the trailer floor, the furnace’s metal frame, and some foam stripping ..... the metal frame had cut through the 2 wires (white/yellow) and were shorted directly to the furnace unit. i lifted the furnace unit, used an old rubber keychain thing to put between the furnace frame & the wiring, and we’re good as new!!
thank you all for the input!!!