Left turn signal better than right

I think NAPA carries sockets, or you might find used ones in good condition. I am only familiar with 1966 cars, at that time the cast housings had sockets with fingers that snapped in, and the pot metal housings, mounted and sealed to body. Both could result in grounding problems, because mopar did not have ground wire at sockets. I am not sure how 1973 sockets and housings may have changed.

There is a coil spring, it pushes contacts to bulb contacts, it rusts and looses tension on salt belt cars. The socket metal corrodes the plating, and contact the alignment pins is where ground connects at bulb, then socket to housing, housing to body.