2000 Dodge Caravan RT Park 15A Fuse keeps Blowing

Problem:
-when light switch turned on, 15A fuse (RT Park) blows.
-No Instrument cluster illumination
-No running lights on RIGHT SIDE ONLY (left side is ok)

Steps Taken:
-replaced 15A fuse 3 times.

Please HELP...
Thanks
David in Naples

Do you have a trailer hitch? If you do, I'd check its wiring harness for shorts first. If that doesn't solve it I'd check all the right side lamp sockets for moisture and/or short.

Good luck.