The other week my buddy said that my right side taillight bulb was not on in running mode, but it worked for brakes. Now the other one doesnt work in running mode but they both work for brakes. Could it be just the bulbs?

 

Probably just burned out the filament in the other bulb. Buy a new one for $2 and enjoy

 

Thanks, ill try it.

 

Mine did the same thing and a month later I had to relpace the other one I thought it was because I hooked up LED light through my taillights

 

I kept blowing running filament until I got the dealer bulb. It's made a little different.