12 replies to this topic

[LT Traveler]

I think you wouldn't go wrong following those "split the + and - between batteries" recommendation.
But, seems to me: If the two batteries are connected by heavy-enough-gauge cable so that resistance of that short-heavy cable is negligible, then the respective terminals (the two positives or the two negatives) on each battery are at the same potential. So the current will flow through both batteries equally -- i.e., it doesn't matter which battery you connect the campers wiring to or if you split it.
This is my theoretical analysis, which is what I applied in my truck...and I guess a key question would be "What cable gauge is 'heavy-enough-gauge'?"

Thanks Marc, I appreciate you checking in and helping out. It's all set back up now and I'll report our finding on the next trip.

[pods8]

Thanks Pods8, appreciate the info. I have a negative + positive cable from the camper to the camper battery and a third wire that I assumed was a ground...Now I don't know?

These wires are coming from where exactly when you say "from the camper"? My FWC is older and had very limited wiring but your extra wire could be solar prewiring if you're talking inside the camper. If you're talking the camper pigtail to the truck I think the newer campers have a third wire for clearance lights. Lots of different possibilities depending on where you're talking about.

[LT Traveler]

These wires are coming from where exactly when you say "from the camper"? My FWC is older and had very limited wiring but your extra wire could be solar prewiring if you're talking inside the camper. If you're talking the camper pigtail to the truck I think the newer campers have a third wire for clearance lights. Lots of different possibilities depending on where you're talking about.

Not exactly sure where it comes from I hate to say...all wires come through the cabinets leading to places unknown. The camper is pre-wired for solar so maybe that's it or clearance lights. Really almost impossible to figure out where they lead back to because they're all hidden.