Several years ago I converted my fifth wheel to 50 amps. I purchased the fify amp cord from someone on ebay and I found the electrical box and breakers at Home Depot. As mentioned before the difficult job was removing the 30 amp cable and getting the 50 amp cable into the fiver.
I don't have any advice as to what is wrong, but it might help if you let everyone know what sort of slide mechanism you have. Is it electrical motor driven on cog rails; or hydraulic; or electric motor pulling cables to extend and retract?
You just had bad luck. When we had to replace ours we picked up one that would fit the space allotted. I don't even remember the brand. It has a button panel and it gets used a lot. It has worked perfectly for six years now.
If you have your campers electrical cable plugged into the truck the truck's electrical system will power the electric brakes. So yes your trailers brakes will work without your trailers battery being connected. However if your trailer's battery is disconnected and the trailer's electrical cable is not plugged into your truck the electric brakes will not work.
Thanks Golden I have the small GPS silver dollar antenna that I used with Streets and Trips. I was thinking tho of purchasing a dash mounted GPS designed for vehicles. I was wondering if any of them have a trip planning mode.