Headlights blinking when using right turn signal LOL

This am, After a HEAVY rainstorm yesterday (yes my car was outside). I drove it to work today and the headlights (low beams) were blinking witht he right turn signal!!! talk about funny. And this is witht he headlight switch completely off. After about 10 min of driving, it did not happen anymore. I'm pretty sure water got in somewhere, but where in the wiring could the headlights and turn signals meet? I thought only in the headlight switch?

the car is a 67 coronet

all the wiring "out" to the eng bay is in close proximity at the bulkhead. Awhile back my headlight sw was going out and my headlights would go out for several seconds then come back on and the guy ahead of me pulled over thinking I'm sure that there was a cop car or emergency vehicle behind him and he sure had a weird look on his face as we made eye contact as I went passed him.

BAD GROUND...THIS WILL CAUSE ALL KINDS OF STUPID PROBLEMS..REALLY...LOOK FOR A BAD GROUND IN THE HEAD LIGHT SYSTEM.