The shunt is extra.
I bought the big one 500 amp shunt for Trimetric & other meters
and was lucky I did.
The 50 amp shunt would have been WAY too small with the inverter pulling upwards of 150 amps when tasked.
New photos of the 12VDC panel I made. The big switch kills power to the landing gear (so no smart a** crushes my rear stabs or runs the camper down onto the hood of my DW's car). The long vertical plastic cover is the 150 Amp Fuse for the inverter. The big brass thing is the Shunt for the Trimetric. The red rubber covered thing is the auto reset current limiter for the camper and it connects to the buss I made to hang the fuses for left and right main slides and the landing gear. The red wire at the end goes to the pin box and another current limiter to protect the TV system; then on to the WFCO power center.
The white wires are ground wires. ALL 12VDC current into or out of the batteries MUST pass through the shunt in order to get accurate measurements. The thin bundle of wires is from the Trimetric computer on the wall in the camper.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW