Installing a LOC converter behind stock HU; which wire tap into for Remote turnon?

[FSUNole17]

I am installing a PAC SNI-35 converter behind my stock HU to run a sub amp and need to connect the remote turn on lead to a wire so that the amp turns on when the radio turns on. Just need to know which wire to splice into so I don't go hacking into a ton of wires.

TIA

 

[quietpeen]

when I had a loc I tapped into the power for the cigarette lighter on the dash since its keyed

 

[HKkid]

I ran my remote wire to a switch. That way if don't want a bunch of base I can turn it on and off when I please.

 

[FSUNole17]

when I had a loc I tapped into the power for the cigarette lighter on the dash since its keyed

But wouldn't this mean that it is on all the time as opposed to just when the radio is on?