ICDEDPPL

Let me try again , instead of running a wire from truck battery to plug why not just run it off a battery on the trailer? Assuming that it worked that way.
YOur breakaway has nothing to do with the constant power (black wire, I believe) that I`m talkng about .
I used to keep a full sized battery on my trailer for hydraulic pump and power jack.

Brad Christy

Dan,

Yes. The breakaway system is isolated from the main system, except for the charge circuit that draws on the main 12v feed. I don’t think the current flows back toward the system from the charge circuit, but it could, I guess.

I do know that, between losing the fuse for that 12v main feed and discovering we’d lost it, the charge circuit was showing the “charge” light, so the battery might have been running the actuator in the absence of supply from the truck. Good to know it will, but I don’t think I want to rely on it as SOP. I’m not sure how long a battery of a reasonable size would last running the actuator as a main source of power. I’m fairly certain the one that’s part of the breakaway system wouldn’t last nearly long enough.

Thanks. Brad.