Well the word on the Monaco forums is that ( the older ones in particular ) are " Snowflakes " no two the same .
I'm thinking that maybe with 3 different chassis and multiple floor plans on the assembly line together ; all with the Dutch Star name plate ; that vintage Newmars maybe the same .
I know that 99 Dutch Stars on Freightliner , underwent a major wiring change Jan, 04,1999 because of a huge change in the Freightliner wiring harness and gauge package that DS on F/L chassis built in the fall of 1998 didn't have .
Took me a while to sort that out ; my chassis is a Feb 99 production , coach completed in March.
In 12 years of crawling , over, under around and through my coach , I'm reasonably happy I've got it figured out.
Safe travels .