Emilio, the turn signal lights on a 67 RS do not come on when you turn on the lights.
They will if you turn just the parking lights on, but as soon as you pull the switch all the way out for headlights, they go out. This is normal for these cars. I kinda wish they'd stay on myself.
I agree with dnult, check for ground on the turn signal not working. Could be something else but.....start there anyway.
67 RS 327, 4-speed, posi, done.
67 Modified, 454, TH-400, posi, under construction.
67 SS 396, 4-speed, basket case.
72 RS, sitting, partially done.
55 210 post, 2 door, 327 4-speed runs good.
55 2 door post, gasser project
69 Cadillac ElDorado
69 4x4 suburban
Some mornings, it's just not worth chewing thru the leather straps"