no rear blinker / brake light

[stroker_ace]

I have an 05' 6.0 F250 and today on my way to work I noticed that my right blinker was going really fast. Well, from the inside of the truck so I figured I just have a bulb out. So, at lunch time I had a buddy of mine look and see if it was the front blinker, side mirror, or rear blinker. He said the front was fine and also the side mirror. Luckily I had my foot on the brake when he checked the rear because he said that my passenger rear blinker and my brake light both weren't working. So I guess my question is... is that normal? Do the brake light and blinker run off of one bulb? I just didn't have the time to open it up at lunch and it would be nice to know before I roll up to the parts store in a couple of hours.

[stroker_ace]

Well, if anyone else is wondering... I got the bulb and took it home. That one light bulb operates the blinker and the brake light. A separate bulb is used to illuminate the tail light.