Power Relay Switch for graph harness

[MichAngler]

Anyone set one up to power graphs and GLS 10?

I built a new harness with bluesea fuse block and marinco switch to power my graphs but I forget to turn it off at the end of the day once and a while
This is not an issue because I remove the graphs so nothing is drawing power it just leave the power leads hot

But I plan to add a Livescope system and if I leave it on the GLS 10 will continue to draw power

This got me to thinking if I use a power relay triggered off the boats main power switch as soon as I turn that off it would cut the power to all the graphs and GLS 10

Note I’m running the entire system off one Ionic 125Ah battery and is handling the load with no issues

Now I have yet to find one with larger gauge wire so maybe set it up to power the GLS 10 only

This is the type of relay I’m considering
https://www.amazon.com/Ehdis-Truck-N...0314771&sr=8-5

Any thoughts?