I got a Kicker sub and amp.
Didn't need remote wire, it shuts off automatically when you use the high level input jacks
I wired it directly from the rear right speaker by taking the interior back seat apart.
This was my first time ever wiring anything in a car, or taking apart...
how many seconds from the light turning green were you when you noticed this?
If you have the S model it's possible you were stuck in a gear for a few seconds.