Well, there is a transformer in that circuit. I'm not sure the voltage it puts out, but most neons have a fairly high voltage. It'd need some resistance in the line for sure. note where the leads come out for the neon, and test it with a voltmeter, ammeter, and then ask us once you have those variables filled in. I don't want to rip mine apart again. But in short, yes, it can be made to work.
