Victron VM-3P75CT install for just monitoring both 120legs in a 50a rv setup

hi, i have a complete victron setup. cerbogx, inverter charger, lynx, 7 inch screen, multiple solar controllers etc. this is in a 50a rv. i use a mulitplus 3000 12v.

currently, my vrm only displays what runs through the inverter charger and not the 120v loads that are not serviced by the inverter charger. i want to be able to see the total power usage.

it is not clear on how to install it. i will do it at the ac power panel where the 6 gauge wires come into the panel. i know i want to put the current transformers on those wires, but do i also have to tap into the 6 gauge wires to have them run into the unit itself? those of you who have done it, can you please share what you did. how only way i can see to do that is to have a junction box to run the legs into that then has them spliced together?

thanks