Tail parking lights don't work

Ive got a '14 Pip, no new mods all my mods are atlas 6 months old. When I turn on my headlights at night and make sure the dimmer switch, by the fuel tank button, inside the cabin, is dimmed, the headlights work, the front parking lights work, the brake lights work ( WHEN I STEP ON THE PEDAL), but they don't turn on when I just have the parking lights on with out braking. So, to clarify, the parking lights (the two strip that are used as brake lights (led)) they don't turn on. what could it be? Some fuse? I made sure to cycle the column stalk switch a few times, and the dimmer switch a few times. Could removing and reattaching battery fix it? Should I take it to the dealer (~85k miles).

The gist is that the brake lights don't dim when not braking with parking lights on.

Update: Turns out none of the parking lights are coming on, so it seems it could be as simple as blown fuse, could someone point me to a document that tells where that particular fuse is located, or just show me a pic, what could've caused this?

 

Thanks, already tried and was well aware of it, i read somewhere that there is a fuse box in the "luggage compartment", I don't want to do trail and error with different fuses. Appreciate the help though.

 

Yeah thats is I already checked.

 

which compartment?

 

Thanks a ton will update when i get a chance.

 

What is this "red" you speak of?

 

Thanks so much, don't mind it. Ill let you know how it goes.

 

like i mentioned in the beginning all mods are 6 months old, i just rounded up from 5. that was a long time ago, they were working just fine till yesterday.

 

Yeah man, you do know I own a auto mechanic shop, right? So I know all of the basics, my all data system wasn't working for the past few day so couldn't pull a tech manual or look at the schematics for the anything past 2008. i still appreciate all the detail.