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.

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.

Hi Brad Christy,

That conversion looks amazing! It’s great to see how well the switch from surge brakes to electric over hydraulic turned out. It definitely makes towing smoother and more controlled. Kudos on the successful project—it’s always impressive to see DIY upgrades that turn out so well!

Best regards,

MYCO Trailers Parts. Dept.
941-748-2397
www.mycotrailers.com

Myco,

Thanks. The mechanical stuff is pretty easy other than the fact that I are not welder. We are still dealing with an electrical gremlin of some sort, where the whole system goes offline, either momentarily or indefinitely until it is unplugged and plugged back in. The tech at HydraStar insists it is a loss of connection of the main 12v pin-out at the plug/socket. I've for the most part confirmed that with the direct wiring I rigged up last year. I've got a new socket to install on the truck but haven't had time or weather to address it since the engine failure in the fall. I'm actually inclined to try a new pigtail connecter first, as it appears to be a way easier job. I just, as I said, haven't had time to address it.

Thanks. Brad.