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We dropped the 12v backfeed, though will have 2-banks of 2-31's separated by a battery combiner which will allow the second bank to start assist, if need. We removed the LBCD and battery relay disconnects as you did, though brought the 24v alternator to the battery side of the manual...

Do you have a relay in mind? We found an adjustable under/over voltage relay made for a rack mount for a protected location: ~$25 with shipping. The IP54 rated ones were all over $140, since we splurged on the alternator =/. Planning to mount next to the Victron under the PDP and use the...

Well for 'only' 8x the cost we dropped in a Leece Neville 24v 200a unit. It required modifying the J180 bracket, though used the existing serpentine. Our intended loads add up to more amperage than yours, though I like the small form pad mount unit you have and the thriftiness. Admirable...

Your efforts paid off; thanks for the laugh. Habitat will have a separate system–

We see it as a good path forward as we are adding 24v AC to the cab. Another way to separate out the AC and non essential accessories would be to replace the Niehoff dual with a 28v 200a and reuse the 12v lines to run 24v for the AC and accessories straight off the second battery bank...

The Victron 24/12v 70a connecyed at PDP X1 supplies 12v to the PDP X2. Leave a 12v feed to keep dual alternator happy. Only load on alternator is 24v. 28v 100a should be 2.8kW—

Is it complex? Use a Victron 24/12 70a to power the PDP's 12v side utilizing the full 24v side of the Niehoff alternator while the engine is running; charge 2 batteries in series maintained by the alternator's 24v side for starting, eliminating over charging, alternator over heating, and need...

The more I read the more I think 100 to 150a 24v alternator is all that is needed for cab and chassis only, even with a 24v HVAC system for the cab. We are thinking of splitting to a system of two 2-12vAGM's in series (first set to the starter; second set to the PDP @h X1, with a 24/12 70a...

We are all making plans for the path we hope to travel. Life is what happens when you are busy making other plans. —Alen Saunders

Habitat has to be separate, like a trailer, a habitat must carry its own 'water'. Cab and chassis 24v 175 or 200a alternator, a 24v/12v 70a converter to run 12v side and accessories, four? batteries, (and a spare ether can), for winter starting after sitting unused two weeks at Alta, Big Sky...

I am still thinking running a 3126b or C7 cab and chassis, even with a 24v AC unit, a 28v 200a alternator with a 24v/12v 70a converter is the simplest, most economical way to use in-stock, reasonably available parts. That can be accomplished new, out of the box for about $2,000 and run reliably...

How do you all know it is the 100a in the diagram? Both diagrams reference 300a. I am trying learn, you all are so far ahead of me–

Two questions: 1— #45 looks like a bracket? 2— Wouldn't it be simpler and less expensive to go to a 24v alternator and a 24v/12v converter?

Any progress to report?