Hello,
Welcome, as I'm fairly new here too. I have the exact 1986 22ft toyota dolphin that I picked up not too long ago. Good luck fixing her up. I've just torn the wall off and replaced it in mine. Still have a lot of work to do, but its getting done. There is a lot of wiring in my toy that is messed up I might need some help in the near future figuring it out. Maybe you will be able to help since you have the same one as me, and vis versa let me know if you need any input!
-GOOD LUCK