This article is from the Chrysler-Plymouth-Dodge FAQ, by Dr. David Zatz with numerous contributions by others.
jbaze@NMSU.Edu (Jody L. Baze) sez:
Look under the rear of the car - shouldn't need to jack it up, it's
accessible. The sway bar is attached to the frame and runs up to near
the wheel where it is attached to the shock assembly with a tie rod.
It was the tie rod attachments that were squeaking.
I applied a few drops of teflon lube (it's what I had on hand) to both
the top and bottom pivot points around the bushings and no more
squeak. Pretty simple...it's a 1-minute job once you know where to lube!