Left turn signal issue

I noticed yesterday my LH dash signal indicator wasn't working. Now it is, BUT now my front left signal isn't working. Rear left is. Both front and rear right is working.
Chkd for power at yellow wire where it connects to bulb. Nothing. Removed underhood bulkhead and checked at "U" cavity at bulkhead, nothing.
That terminal is fed from headlight switch, which feeds the rear left which works.
From HL switch the yellow/tracer goes to front, while the black goes to rear.
Ideas?
67 barracuda
Thanks
Steve