Posting this because it may assist someone in the future.
When we were prepping our pre-owned 2017 17 B for our first dry camping outing on Memorial Day weekend we discovered we were having a 12 volt power issue. I had just installed a new pair of 6 volt batteries which we knew were needed.
All electrical systems worked perfect on AC power or when the trailer was plugged into the tow vehicle.
Our first trip was a little disappointing because we couldn’t use the power jack or pump and had to limit fan and light usage. Enjoyed the additional challenge though.
Problem:
Trailer on 12 volt power- turning on the water pump would cut off the power completely and the Go Power module would turn off, or flash intermittently. The Go Power module would come back on or stabilize in 3-7 minutes.
Or, we would power on a the Maxx Fan, some lights and the fridge and the 12 volt power would cut off.
My wife reached out the previous and second owner of our trailer, forum member TBURT, and he had some fantastic suggestions. Thanks Tom! I also reached out to Dustin Dione in parts and service at ETI and he was a good resource. Searching the forum also provided a wealth of info. I was following Bobbie54 ‘s post... thanks everyone!
https://www.escapeforum.org/forums/f...12v-18215.html
Resolution (Either one, or the combination of these efforts, has completely resolved the issue):
--health of new 6 volt batteries checked with an amperage load tester (good to confirm)
--verified tow vehicle was sending power to the trailer through 7 pin RV connector (nice to confirm this)
--tested all fuses and breakers in the breaker box (a few 12 volt fuses were out of spec with up-amperage fuses, probably no issue, nice to have it back to spec)
--removed two aftermarket and poorly spliced-in solar cable wires, cleaned up Go Power connections. Remounted Go Power module with better hardware.
--replaced all corroded 6 volt battery terminal connections; includes new ground wire, battery series connection wire and wire running from the batteries into the trailer (connected to 50 amp thermal circuit breaker)
--installed new 12 volt 50 amp and 30 amp thermal circuit breakers (the 6 volt batteries and solar panel are wired into these); these circuit breakers passed an ohm test, I was running fresh wires so I replaced these anyways
-- replaced the 12 volt battery shut off switch with a super high quality Blue Sea Systems 300 amp M Series; original switch passed a voltage test, replaced anyways
--repaired 6 volt battery ground connection to trailer frame with new wire, connector and stainless hardware (original bolt, connector and wire were extremely corroded)
After all this we’re certain it was the negative ground on the trailer frame and/or the battery shut off switch. TBurt, Dustin and forum members all suggested these things first.
Overall about $125 (excluding tools). We learned a lot, I got a couple new electrical tools and our second dry camping outing was all that much more rewarding running on 12 volt power for 2 days! Heading out again this weekend.