Electrical work! Help please.

I have an issue with electrical work. I may have solved an issue with my headlight situation, but I do wanna purchase a oem/aftermarket head light harness so I can get rid of the corroded wires… but any who, !brake lights don’t come on when I turn on head lights! The whole back even third as well.

so the fuses I checked under the dash and that I seen were blown when I tested it. It was “ Panel “ and “ tail “. So I removed them and replaced the “ blown fuses “ and when I went to go check again still nothing. So then I thought probably not getting power or grounding somewhere… So I checked the outer fuse box, those were all the hi/Lo, everything to deal with headlights. Like literally everything I replaced about 5-7 of them in the front and 2 inside.

So yeah the headlights, I’m trying to find a oem harness or aftermarket to see if that fixes the headlight Situation. But get this my headlights still come on so idkk, but I still wanna change it out because the wires are fried.

then for the rears I’m lost of words, and that panel fuse as well, and recently my reverse camera stopped working as well ‍♀️‍♂️

any help will be greatly appreciated I’ve done electrical work. And now I wanna replace my harnesses I ruined because of careless decisions I thought was cool but bit me in the ass in the long run. So if y’all got any links for head light harnesses, just the harness and not whole engine harness for just head light harness, that’ll be greatly appreciated. Thank you



update

I’m kinda up to the point where I was gonna replace the whole electrical system under the dash… but I do wanna fix my brake lights for sure, I can’t even drive my truck at night…