Bear9350 wrote:
So I found the DC circuit breaker like pictured. It only had one wire connected to it, was rusted over and doesn't look like it has been used for several years.
There were also two in-line 30 amp buss fuses on two separate lines going to my battery. One of these fuses were blown the other was good. I swapped them and found the lights to work and the slide out not working.
My question is should I just replace the 30 amp buss fuse or get a new DC circuit breaker like pictured?
Sounds like a previous owner abandoned the breaker, choosing to install two fuses instead. Your call on replacement particulars.
Here's what I'd do: Leave the slide connected to one fuse and adaptor, wired directly to battery. Replace the blown fuse and adaptor with a 40-60 amp circuit breaker as was mentioned above. You should also have one other wire connected directly to battery and that is the supply power for the emergency brake switch.
Tip: as long as you're mucking around with battery wires, it might be a good time to install a disconnect switch Most trailers have parasitic loads that will drain a battery in a few days. A disconnect switch allows an owner to flip the switch when the trailer is in storage so the battery doesn't drain completely. If you're bringing the battery inside, you could locate the switch inside, a better location.
Once you have the 12 V power straightened out and the lights working, we can move on to diagnose any converter issues you may have. With the trailer connected to shore power, the 120V circuit breaker that powers the converter passing power to the converter, you should be able to measure 13.5+ DCV at the battery terminals or the converter's output terminals.
