There are generally two types of fuse panels in a motorhome, one is the chassis installed and the other is the house builder installed panels. I had a 1990 27D and did receive a copy from Bounder back when it was Fleetwood. I am not sure who bought the Bounder name and you may find that they don't really care about helping you with a 25 year old coach made by another company.
The old Fleetwood products were wired "helter skelter" and identifying house installed wiring is at best a real nightmare. I am not trying to demean your rig, we loved our Bounder and still miss some of the benefits it had, it just was worn out.
If it is a chassis installed fuse block, go to Chevy and research P30/32 RV chassis fuses.