In my 08. Ive Lost my 12 volt switched!

If i had a lot of time id find were the problem lies. Has to be deep in side the dash. Im just going to run a 12 volt switched from the fue box does any one know where i can jump into with out all the trouble shooting i dont have the time for. Ive all ready got thr wire ran just need to tie it in. Currently have it on a toggle. My head unit works just fine this way just want it normal with the key on and off

Upfitter switches are out as well never have worked

what about the purple wire in the main harness that is dead headed from factory?

Is that switched. ?

yes

Were is it? In the dash?

Under the dash in the main harness. It is a purple wire with a black cap on it