easy fix...use a standard glow igniter for the glow plug. I know you shouldn't have to, but if it gets you going...
Make sure the wire is firmly attached to the glow plug as well. Use a pair of needle nose pliers to press it on as tight as you can.
Your glow plug should glow orange/red when it's functioning properly. If it does not even with a standard glow igniter, then the glow plug is bad.