Turn Signal Problem

["Biff Jones" <biffjones@erols.com>]

Help!       Up until this morning my turn signals worked.  Today
if I turn on either signal the opposite side running/parking
lights blink in sequence with the turn signal side.  If I turn on
the parking/running lights the turn signals work.  Could I have a
bad flasher unit? Or could my light switch be shorted internally?

I've traced all the wires and found no shorts, mismatches, etal.
and as I said yesterday they worked fine.  Open to any and all
answers, comments, theories.  I'm stumped.

Thanks.  I'm a newbie after a 37 year hiatus from LBC's.

Biff