OK, so now I'm really embarrassed, but thanks a bunch Yardsale. I was all prepared to check an electrical problem that didn't exist. Note to self: check the simple stuff first! issue resolved!
Thank s for the replies. Mine has a two position rocker for each of the two rear courtesy lights. Each works when I use the rocker but nothing when the the dash wheel is rotated full up (past detent). The front seat courtesy lights come on but not the rear.