This is Jim on Caoe Cod again.
I have original owner manual. 2" thick.
Too much to copy.
I am brand new to this forum and could not figure out how to send a picture.
But, the cover of manual is
MONACO
Roadmaster
Looks exactly like yours.
3208 CAT Turbo.
Allison 4 spd
Hydraulic brakes
ONAN LPNG genset
I you would like, e:mail me, as I don't go on this forum often.
Found your post by googling 1989 Monaco
E:mail
MRRV001@aol.com