for those making the fireball shooter, keep reading at the end for a little bit of inside glow plug information.
Step 1: First things first
i am not redoing Kipkay's instructable, but merely taking the open-source horse by the reigns and going to town. i've got a quick upgrade and some information that might help with glow plugs. hope you enjoy.
now go get this stuff:
some stiff bus wire (around 22g)
some hookup wire (whatever gauge you want)
a small bolt slightly smaller than your glow plug's lead
heat shrink tubing