1976 Kings Highway

I always thought it was a law the VIN had to be on a metal tag on the dash near the driver where it could be seen from outside thru the front windshield. But my '02 Winnie has it on the tire pressure plaque next to the driver's left side. No way could it be seen from outside.

There's another printing of the VIN on a tag under the hood.

Also, it would help if you put the year, brand, and model of your RV somewhere in your post. Most of us put it in as part of our signature.

normally they are located close to the drivers seat
a tag riveted to wall under the the drivers window

a friend with a 78 kings highway says his is just inside the entry door on the left , close by the porch light switch