Signal light gremlin.

So if I'm driving furring the day my signal lights work great...... But as soon as my headlights are turned on if I signal left it works but signaling right the flasher does not work. From there if I manually make it "flash" the side and front signals work to signal right but in the rear tail lights it shows me signaling right.

This is on my 68 Newport 4 door. I have been tracing for a while on and off and can't figure this out.

Thanks for reading.