which way to go
 

this is for a 1991 pickmup 2.3
I hope that some one can help me figure this out.
1. all turn signals and 4way have worked properly for quite a while
2. now they are doing the following:
a. left turn signal front and back work correctly.
b. parking lamop on left works correctly.
c. right turn signal does not work . at either location.
d. only right sinal lamps work when 4way flasher switch is depressed
:confused::confused::confused::confused::confused:
HELP PLEASE
Thank You
rnlajunta