Like Bug Bad Bee said, you have two different issues.
Map light - Yellow (switched ground) and Pink (Full time +12V) are the correct colors for the courtesy lights but I am not familiar with any 3 prong round connector. The only ones I have dealt with have a two prong and single bullet connector. Do you have a console?
Maybe these links will help. The third link is harder to follow but usually more accurate.
http://www.mymopar.com/downloads/1968/68BelvedereGTXSatelliteRoadRunnerA.JPGhttp://www.mymopar.com/downloads/1968/68BelvedereGTXSatelliteRoadRunnerB.JPGhttp://www.mymopar.com/downloads/1968/68BelvedereGTXSatelliteRoadRunneFull.pdfTurn signal lights are on a completely different circuit & fuse.
