HEADLIGHT problem?

RIGHT HEAD LITE KEEPS GOING OUT ( Low Beam ) & IT DONT SEEM LIKE THE BULB IS THE ISSUE...?????............COULD IT POSSIBLE BE IN THE COLLUM WERE THE CONTROL ARM IS AT..?

both head lights would go out if the switch was bad.. check wiring to bulb. center wire will be ground use test light to figure out what colour for low n high, use battery ground to verify positive feeds reverse test light to battery positive to verify ground in plug, wiggle harness while you test to see if maybe there is a break in wire close to headlamp, also check fuse box sum cars will have separate fuses for headlights hi n low r and left.