turn signal help

[cflvulcan]

ok im getting ready to go on a trip tomorrow with my 69 c10. i just put it back together. i went to check the lights just now. all the lights work but the right turn signals. when i put the hazard lights on, all of the lights blink but the front right. i put a new bulb in it. i put a test light to the plug on the rad support and its not blinking there either. i checked all the grounds. i cleaned the contact in the column and still nothing. any suggestions????