What I meant was I'll be taking the 12v switched signal (ACC) to activate relay and use the 10A IP2 (Always Hot) fused circuit which used to be for the factory stereo to power the DC-DC converter. Very much so like this:
I however, can easily run a new fused wire from the battery to provide the actual power instead of using the factory IP2 fuse (Battery is under rear seat). I would prefer to not have a bunch of terminals and wires going to the accessory extension on my battery post. I am contemplating getting an auxiliary fuse block. As I have two amplifiers and three separate circuits to my LED tail lights already tied to the battery. Just makes for hassle to remove battery if ever need be. It may also be time for a "tank" circuit with an aux battery.
BTW, oldspark, does this project look familiar? I believe we have crossed virtual paths before haha!