clearance lights

[mountaintime]

tyring to figure out why they don't work. i am getting power to all of the clearance lights but the bulbs don't light up, all wiring seems to be correct as i am getting power. any help with why the lights don't shine? my brake lights work fine and all other power works.
thanks for any help

[D_E_Bishop]

I have Patterson DOT lights with the vibration proof sockets(not). The ground is a flimsy, plastic piece of junk and the ground separates frquently. I drilled out the plastic stud and put a #6 vy 1/2" sheet metal screw on the light. No more lost grounds.

[memgrove]

Are you sure you are using the proper bulb?

[BB_TX]

I agree with above. If you have power to the lights, and the bulbs are good, and they still do not light up, then it is a ground problem.
Do brake lights/turn signals/flashers work?
How are you determining that you have power to the bulbs?

[boogie_4wheel]

Weak ground or weak power connection?

With the bulbs in place, measure voltage again and see if you still have 12V with a load.
Use a piece of jumper wire to ground the light at an alternate location to prove a good/bad ground.

[Bob_Olallawa]

If you have power to the bulb, then either the bulb or the ground is bad.