Monitoring solar amps when using a DC to DC charger

mine is set up about the same but more solar & the 40 amp 12v Redarc bcdc charger, plus 240 volt charger all hard wired in place & has the redarc monitor that shows what is going in from where e.g. Vehicle, Solar or 240 volt charger (it auto picks what is supplying the most power) & shows you on the monitor E.G. driving shows what the vehicle is putting in to the batteries, car stopped it shows how much solar is going in & if plugged in to 240v power the same, It will also show if any of the batteries are getting hot, normally a sign a battery is on its way out or the units regulator is faulty pumping too much power in
but I do run 2 systems & have more power than I should ever need 1 x 12v & 1 x 24v & have 360 amps in 12v batteries & 400amps in 24v & 240watts in 12v solar & 120 watts in 24v solar plus 3kva gen I must admit I hardly ever look at the monitors but I did notice once driving along that the 12v was getting solar pulled over to check & found I forgot to glug in the Anderson plug

Duck...you have more power at your fingers than most of the Eastern states of Australia!....lol

Any relation to Elon Musk?

Duck
Perhaps you should talk to Jay the boss of SA. He thinks squillions of $ to Elon Musk is a way to cure his problems. Many little batteries called one big battery only makes SA RUN FOR 1 hour longer when required. Should be in Friday Funnies.
Your system is superior, get a job on the SA POWER advisory team.

DUCK FOR PREMIER.

Guys I had to laugh
Vehicle is a Isuzu NPS 300 dual cab tray back with warrior conversion with a slide on camper that I built all in foam sandwich construction (I’m a boat builder)
Truck 24v = The power is for 2nd Start + Fwd 24v 15000lbs warn winch, Aft 24v 17500lbs runva winch,the 24v can also be switched to run stainless steel 180ltr draw fridge & freezer that is 12/24v, 12v to run camper etc.
Last year I was in SA I should have had a wind generator as it blowed the main power lines down! I was to go to kangaroo island earlier this year but the misses had a heart opp so hopping to go in November this year so I’ll take the jumper leads & tap into the mains & help you out (LOL)

Yep, that's the way I'd go. My "old" Steca solar controller has a readout of all things going on, so a new dc/dc charger with the same is an easy way rather than having separate meters adding to the "clutter"..