Grumpy_G

We have a communication problem :) AC = air conditioning in this context. Sorry should have spelled that out. There is a breaker labeled AC so I assume the trailer has one. If it works the problem is… (View Post)

One thing that sticks out is that for several days the min battery voltage is zero. This means the battery was fully discharged and turned itself off. As you discovered, voltage is not a good indicat… (View Post)

The battery switch needs to be on for traveling as well for the emergency braking to work. Generally leave it on unless the trailer is stored. Simple converter test: Read battery voltage with shore p… (View Post)

Hmm that certainly becomes interesting... I think the likelihood that you got two defective jacks is very small. Can you bench test the jack with a jumper pack or similar power source ? These things … (View Post)

The trailer frame may not have connection to 12V ground. If you have jumper cables connect the battery negative to a shiny bolt on the frame and see if it works then.  (View Post)