[folivier]

I called Newell and they said there is a "scissor arm" the wires pass through for the slide to extend/retract. It is located in the roof of the passenger side basement compartment behind the front wheel. Actually it is just forward of that compartment and accessed by pulling out the 1" foam board in the top of the compartment. Fortunately Newell has some spare wires in that bundle, presumably for electric blinds. My plan is to use one of the spare wires to replace the bad wire. But wait the plot thickens! A couple days ago we had tremendous winds and torrential rainfalls. Over 12" in a 24 hour period. One of the local cemeteries actually had coffins floating up out of the ground!
http://wgno.com/2014/05/29/massive-flood...z339uKKhxb
So I pulled in the slides. Today after I extended the slides I checked all of the overhead light fixtures for shorts and they are ok. Out of curiosity I put in another fuse and now the lights are working. So there must be a skinned wire somewhere in that bundle. It's raining again so if it ever stops I'll get back to work on this issue.