original problem: passenger side low beam out. 10 amp passenger side low beam headlight fuse was burned, i put in a new one but it did not fix the problem. bought new bulbs, neither worked in passenger assembly. swapped ballasts, they both worked on drivers side but not on passenger side. swapped headlight assemblies and drivers side worked on passenger side but passenger side did not work on drivers side. on passenger side assembly i checked the continuity on the low beam wire from the ballest to the bulb, all connections/connectors had continuity, stumped. re-installed "bad" assembly, it all of the sudden worked??? put new bulbs in they both work now but with a new problem. now, they come on for a split second and go out, i cycle the headlight on/off switch 2, 3, 4 times or more and the bulbs will finally stay lit. any ideas what this problem could be?