The front bulbs are dual filament. If you hook the wrong filament to the
turn signal wire the blinker current is too low to properly operate the
flasher relay. The turn signals are supposed to use the brighter of the
2 filaments in the front.

This is complicated by the fact that the bulbs come both ways, with
opposite internal wiring on one versus the other. If you get new bulbs
that are reversed in this way, the wrong filament will be flashing and
the flasher relay won't like it.

Mark

Bryan Feddish wrote:
> I have an issue with the right side blinker blinking really fast.  At first, the front bulb was out. OK, I go to replace it and socket falls apart.  I replace the socket and the bulb. Now both front and back blink but really fast.  I checked the ground in both front and back.  The ground wires are grounded to the vehicle.  What I did notice is that when I disconnect the ground the lights still do the same thing.
>
> Thoughts?
>
> Thanks,
> Bryan
>