I need the schematic for my fuse box 1984 F150 xl

It may be that the Vandura is the chassis it uses. Motorhomes go onto a stock chassis. You could try motorhome RV forums

https://www.google.com/search?q=1984+gmc+motorhome+G3500+fuse+box+diagram

It says Vandura 1 Ton Motorhome

https://www.google.com/search?q=1984+GMC+motorhome+G3500

..

Have you looked over there?

I believe most repair manuals have a wiring diagram in them. Haynes, Mitchel, or Chilton

Google f150 owners manual,it's free.

Pull the fuse cover off and turn it over it is marked as to what fuse is for what. Same with the box under the hood.

There are two fuse boxes on a 2003 GMC Yukon XL.

One is on the drivers side of the instrument panel. It will be visible when you open the drivers door. Remove the cover and you will locate several fuses.

The other fuse box is in the engine compartment. When you open the hood, there will be a fuse box on the right hand side of the engine.

The lighter fuse is located in the car . It should be marked 20A and its location should be designated by the schematic in the cover of the fuse box.

my email is [email protected] and i have a 1991 f150 so the fuse boxes should be the same so i will take a pic of it and send it to you

I regularly use the local library. They have repair manuals that you can check out. Also have electrical wiring diagram books for foreign and domestic that you can make a copy of to take home.

Facing fuse box, left hand side, bottom fuse

Do your compression test to see which cylinder is low so you know which head to pull (v8). Bet on a blown head gasket. Go to your friendly neighborhood parts store and buy a Haynes manual for your make and model. They're around $30 and if you do your own work, it'll pay for itself ten fold, you won't regret it. It'll have step by step instructions for the whole job including torque specs and schematic drawings and pictures. A weekend job for a novice, day for an expert. Good luck and post your results.