I just installed new delta lamps on my 68. These are the bulbs that you dont have to remove to replace the headlight (they come out through the back and accept the newer headlights). They worked great when i turned them on. Then i went to drive and the driverside hi/lo beam was very dim. I wiggled the connector and it did nothing, i kept wiggling and looking around and then it finally went back to full power. I went on my way, then i put the hi beams on and turned them off and the driverside went dim again....

What is going on here?

bad ground?
david