Thanks for the pointers, a good review and reminders.
Scooter, yes, I've got a generator and orignal equipment "charger" along with idiot lights for a power management panel.
I think you're right and the direction I'm heading is 1)do the best I can to make sure I understand what I've got...one 12 V deep cycle as the 'house', on passenger side of unit, connected to the unit's circuit 'theoretically' charged with the house charger along with four 6V batts that sit in a storage compartment on the flat bed. This bank is charged with a lead from the truck battery (have two alternators...110 amp, I understand now). This bank is located on the passenger side of my vehicle and is then led via a small guage wire to the 7 pin receptacle, ugh, on the driver's side. 2)Improve the wiring arrangement by leading the 4 6V directly back to the house bank and increasing the gauge of the wire doing so. 3)Maybe add a boat sort of switch "ONE/TWO/All: sort of thing for gen starts 4) add an inverter/charger with a much more sophisticated panel that will be similar to what I've had on sailboats and shows at least voltage in both banks, amps in from different charging sources and out under different loads. This is information I used to have with at least 10 yr old technology on boats and could be more detailed now.
I'd also like to have made up some cables that allow me to directly "jump" unit batteries directly from truck batteries for those times all fails and you need a little charge to start that generator.
Thanks again, both of you guys