A buddy of mine was hauling a propane cheapo grill to the dump that had rusted out when I noticed it had a side burner that hardly looked used. So I pulled off the valve and burner and threw it in the drawer about 3 years ago. Finally got a chance to put it together to light Edgar a little easier.
Burner and valve...
... and regulator and the dreaded "red button"
...from the other side
...all hooked up
That ought to light a charcoal chimney I set on the main grate to get things started.
ONE WORD OF CAUTION! - If you do something like this then do not operate it unless you stay with and watch it for the entire time it's lit - which will probably only be a few minutes. Propane can buildup inside an enclosed area and we'll be reading about you instead of reading your thread! I am as serious as a tax increase about this. I hope to add a flame safety to this in the near future that will shut off the gas if the flame happened to go out. I just haven't seen Frank's thread on how to do that yet...