I purchased some led bulbs. And the bulbs for the front signal/driving lights only work when signal lights are on. The standard bulbs work fine also the same bulbs work fine when plugged in to the rear brake/ tail lights. Can anyone tell me what could be wrong.

 

Led's need a different flasher unit - standard light bulbs draw a certain amount of current - the flasher unit is thermal, when the current draw is too muchj for the flasher, then the thermal switch kicks off, and thus no power until it cools - this happens about every second inside a standard flasher unit.

LED's don't raw enough current to overload the thermal flasher unit, thus they never flash - need an electronic flasher unit (not thermal) to make them flash.

 

The bulb flashes it just don't work when the parking lights are on