First make sure the left rear tailight bulbs are all tight in their sockets and that nothing is melted and no corrosion (usually green discoloration on the metal parts of socket or bulb). It sounds like you have a electrical connection issue causing the tailights to intermittently work.
Do you have any experience with a voltmeter?
Thanks for the question.
Monday, May 26th, 2014 AT 7:04 PM