LED tail light bulb problem

[tqtran]

I decided to replace my rear tail lights and break lights(not 3rd break light) with some LED bulbs.
Problem is, when I insert them they do not go on, but for some reason if I put them in the "reverse" light bulb socket, they light up just fine.
Is the power output different for the break/tail lights compared to the reverse light? Is there a way to get these LED bulbs to work?

[SilentThunder]

switch the polarity and see i that works

[vath2001]

LED's only work in one direction..... from electroincs class 20 years ago.
So flipping them in the socket should make it work.

[tqtran]

Did not work, I changed the polarity and same thing with two different packages.
Anything else I can try?