Lighter Suddenly No Good?

[Ess14]

I'm wiring a new head unit, my other one got fukd up. I'm starting from scratch not using any wires from the old one.

Ok so, I get my + hooked up to a previous ignition splice, then grounded via the antenna, and hook the constant through the lighter power.
It works, turns on, I touch some wires together to check my speakers and it's going good.

The next day I get in my car and try to hook it up the same way and it's not turning on...
Whip out the multimeter--
The lighter power wire isn't reading any voltage, everything else is.
So I wire it up to the next closest thing, the 'security' button behind the center console, I'm thinkin hey thats always on right?

It works.

So now I have a non-working lighter...
Theres a black wire and an orange/green (or something close) wire coming out of the lighter plug and the constant is the orange green one.
Those wires run together with a whole nother group of wires into a harness and it runs back behind the steering column and up in that shit...
Following that wire seems to be some big work...

Does anyone have any idea why my constant lighter wire doesn't work right now?
Things I could check?
Thanks
Later