Cargo lights out (KC5) But brake lights are working

Hey guys I have a KC5 3rd brake light installed for about a month now. Everything was working fine until I went to check my cargo lights last night and realized they weren’t on But the 3 center red brake lights are all still working. (FYI- No water has entered any of the lenses).

I’m terrible with wiring and the father in law originally helped me install it after a member here helped wire it.

I’m wondering if the 2 outside cargo lights are out from a blown fuse? I typically have the cargo light switch on the “OFF” position and only use it at night...So if it is a blown fuse I guess the 3 red brake lights are responsible vs having the cargos being on too long etc. but I’m not sure at all?

***Edit blown fuse***


Also if you have a bad ground would the red lights still be working?

(2017 off-road double cab short bed-no technology package)

As always I appreciate any advice - suggestions. I figured I’d post here before taking the light out and having the father check the wiring from the 3rd brake light.