First of all, thank you to everyone. Ok, this is what I am taking away from all your help.
1. the PD 4000 is only for charging the camper batteries when I am plugged into shore power.
2. my truck connection is for just topping off the camper batteries, and is not meant to charge them quickly and not to be depended on for normal camper charging if not plugged into shore power.
3. The other alternatives are using solar power to charge the batteries during the day to supplement the topping off of the batteries, or using a generator.
5. Using long jumper cable from truck battery to camper battery. Question, if this is being done, should the 7 pin connector be disconnected?
5. The Old Wizard 1's recommendation from the DC-DC battery charging past forum entry about using a
CTEK D250SA or D250S to charge a drained battery, sends more 12v power back to the camper batteries while driving or fast idling. This is my leading candidate for a solution at this time of my "education". If I am traveling with full batteries in the camper, would there be a way to disable that system or is it built to do that when the camper batteries are full? Will the smart charging system that the old wizard mentioned in new trucks interfere with a CTEK unit?
Thank you for all your help.
