DC-DC Charging ?
When you add a DC-DC charger from the truck as in several threads about that, does that put the house batts in parallel with the engine batt? (as with normal "alternator charging" via 7-pin) Or is...
Forum Discussion
BFL13 wrote:
Is everyone getting one of these things? :)
It says to put the unit as close to the house batteries as possible. Makes it tricky for using with a trailer or truck camper and have fat wiring to the truck.
Not clear to me, but they want to reduce voltage drop between unit and starter batt, but want the unit closer to the house batts. So longer wires will be from unit to starter batt, but they will need to carry the higher input amps. Maybe putting the unit closer to the starter batt makes more sense? Guess it depends on your set-up and what your voltmeter tells you once you try it out.
I have been looking at them for a while. I do not have any 12V power from the truck right now as I dont like the limited capacity of the tiny wire in the 7 way.
I am going to put the signal wire (12v hot switch wire) to one of my upfitter switches that is still run off the key. that way if I know it is close to 100% I will leave the switch off and no charging will take place from the DC-DC, just the solar pannels. but I can manualy turn it on and off via the switch but since the switch is key also if I forget to turn it off it wont be a big deal.
Steve
