Bears Den wrote:
A few weeks ago, I was camping and had my DW close the two slides. We were ready to leave when I remembered there was something inside I forgot to do. DW opened the one slide and I did what I had to. This took all of about 2 minutes to do, when she went to close the slide it would'nt close. The other slide would not open. I even tried plugging into my truck and it didn't work. To my surprise, there were 3 relays between the battery and the body of the trailer which were mounted on the A frame. There was a loose wire and the slides got no juice. Once the wire was tightened the slides worked. Check that first before you spend any money.
Yep those self setting relays are very common and basically take the place of fusable links found on high amperage automotive items for safety purposes. They are typically located very close to the battery, just like fusable links and a common place is on the bottom of the trailer, just behind the A-frame before the wiring goes into the main junction box or into the interior for further routing. They are often exposed and can really corrode up and fail.
Larry