I've dug my Elkhorn 11Z camper out of mothballs after 2 years of sitting. I now find that the furnace doesn't seem to function AT ALL. The furnace is a model 7920-II. The camper is a 1995 model. The furnace installation manual is dated February 1994. Normal procedure on this unit is to turn the thermastat switch to "on" and then turn the heat setting up. After a few seconds (maybe 30) the furnace fan will start to blow and then the autolighter will fire the propane. In my case I get nothing by turning the unit on. No fan....nothing. I've checked the fuse panel and the furnace fuse is OK. I got out my trusty test light and found juice at the connection behind the black plastic thingy that's labeled "5 amps" on the front. I have power at both terminals on that item. Tracing the red wire to a relay I find power at the connection where the red wire connects but nowhere else. I've put my test light on every wire connection I can reach and get no power anywhere other than where I've described. Any ideas?