Scott, you do want a shunt. I am by no means an expert on this but this is what I followed on my build:
This is an electrical diagram from one of Flboy's (Don) builds. The shunt is shown on the right side of the picture about half way down (look for word Victron).

This is a picture of the instruction sheet that came with my Aili meter.

This is the Aili monitor that I purchased and it came with the shunt.
https://www.amazon.com/gp/product/B07FG ... =UTF8&th=1Hope this gives you a little help. I will attempt to see if I can find a picture of how I connected mine. My shunt and buss bars are blocked by my batteries now to be able to get a decent picture to show you.
Best wishes,
Harry
