The plate lights are either a 168 or 194, I've got a few guys using these in their plate lights:
Tail lights will be 3157's for brake/turn & 3156 for reverse.
I've got these sold, but I can get more in a couple weeks:
Fog lights... if they're the old 5" round style, they'll be h3 bulbs, but I don't recommend using led's here. I tried them & they were bright to look at, but didn't have much useful light in front of the truck.
3rdBL takes a 168 or 194... A few guys are using these in red (or white for cargos)
For optimum light, I'd recommend one of my full blown led conversions, they're a ton brighter than even the best led plug-in I have.
Dome light depends on the type of dome you have. The older dome shaped one like this:
Takes 2 of the same bulbs as the plate & 3rdBL for the map lights & a festoon in the center, but I'm using one of my plug-in 24 led panels & it's super bright.
For the newer dome lights like this:
You can use one of the same plate led's or use one of my 24 led panels for even more light.
For the mustang dome lights, I even have plug-in led's for them too.
Front turn signals depends on the year, but they're either 3157's or 168/194 bulbs.
Led headlights are absolutely worthless for any real lighting in front of the vehicle. I'd recommend silverstar ultras or another similar high output halogen bulb.