Engine Running Sense Wire???

[Hodge]

I did say “if it really needs that wire connected” to turn on. The VSR should handle it from there. I don’t believe it will continue to charge until the main battery runs flat.
My Projecta IDC25 continues to charge when I switch off until the main battery gets down to 12.7v

Just had a look at the Renogy wiring and it apparently needs that wire to switch it on. Strange if it has a VSR already..

My Intervolt is the same, if its on the "Ignition" option it will ONLY run if IGN is on and will only cut off if minimum volt threshold is reached.
But there is a voltage sense option too.