so i bought some led's from autozone, plugged it in, and nothing turns on..is it because the output is too high? or can it be caused by something else? it looks like the wedged cone 194 on v-leds.com.

should the v-leds work fine on the Z? thanks guys. BTW, it's for the headlights

 

did you check if the bulb was non-polarized or not? (aka...flip the bulb around...)