The bulb has two filaments in it. One for the break light and one for the running light. Make sure you get one that does both. Failing that, some red cellophane and duck tape will get you where you need to go.
Also, be aware that the bulb without the lens will not be as visible to those behind you. So ride carefully - leave plenty of distance between you and the person behind.
You will be in Texas
No boy will care
You don't even have to wear eye protection in Texas
It's your get together
Your leading every one will block for you
Worse comes to worse
Ride one of the other five bikes you own
Otherwise red tape it
Or look at the cop and go
What do you mean it's gone it was there last time I filled up