Help with some wiring for 1968 Dodge Dart

I have to wonder if this car came from a place like Cuba. Some owners have no options but piece mill whatever parts they can acquire to make things work. Or was a handicapped persons car ?
This bosch relay design is world standard so any junked mid 80s up vehicle could have a proper harness connector somewhere. Part stores will have too. In OEM quality ( NAPA Echlin ) aren't cheap. That gang of crimped connectors you've shown is as good , maybe better, than some of the relay connectors available from aftermarket ( ebay ).