Oh yea, there's a trick to it.....
Cut a very small piece of fuel tubing...1/8 or 1/16 and put it over your glow plug, then put the wire on.
when you put the igniter it shows green, right?
Everything looks like it should light, but it won't, right?
The hot wire is grounding out against the plug.
Try the tubing idea and then be sure to come back and tell me that it worked, OK?