A little overdue, but some follow-up with pictures! I ran this while on a trip a couple weeks ago and didnt seem to be any issues. Will use it again tomorrow on another trip. So far so good.
Engine compartment
Flooded lead acid starter battery #1
I made a bracket to mount the isolator to and welded it to the battery hold down. I put rubber pad to prevent any wear on the side of the battery. Also used a small piece of rubber to give the output cable a little cushion from the radiator bracket. I havent wired the isolator override switch yet (in case need to jump #1 battery).
FLA starting battery #2
Cargo area of truck. The LFP battery and controllers etc are under the removable panel on the right side. I've had these very basic homebrew storage boxes in for probably 10 years at this point. The height isnt for everyone, but it has been working for me and worked really well for giving me the space for the batt/controllers you see below.
This is the fridge I mentioned and the cage I made for it. So far so good.
LFP batt and monitor, DC and solar controllers, and fuse panel and neg bus for load. The "front" portion of this area is open to the 2nd seat area. This will potentially be useful for airflow because the 30amp DC charger is known to get hot. I have a small 12v fan I will wire up to cool the DC charger heat sink if I end up needing to pump a lot of amps into the LFP batt in the future during recharge after deeper draws. The board that the controllers are mounted to is in turn mounted to the truck via a bolt I bought off McMaster Carr to use the third row attachment/bracket. The board is actually sitting on that metal piece and crushed between it and the bolt with washers. Sorry I dont have a good picture.
And finally hood mounted solar panel is working out nicely. I think I could keep the fridge alone running permanently here in sunny socal.
The only issue I've been having is that using the NOCO Genius 10 charger at home has been a little odd. It will get the FLA batteries up to 13.8v pretty quickly since batteries are new, but once the DC charger kicks on (at 13.8v) and it pulls 30amps the voltage on the FLA batteries drops quickly (less than 5 seconds) under 13v which turns the DC charger off. It kind of cycles like that slowly getting the LFP batt topped up. I'm surprised that two 165a reserve capacity FLA batteries cant handle a 30a draw for more than a few seconds without dropping a full volt, but I haven't done any math on it. Maybe I just need a higher amp NOCO or lower amp DC charger, but it eventually gets the job done though with the DC charger cycling ON/OFF.
Thanks all for the help getting this done! And special thanks to
@Fourrunner for hooking me up with awesome connectors, cables, sheathing, heat shrink, etc.