The Gas/Glow mixture burns hot enough that I had problems in my early experiments with a glow plug connector being soldered. I made one out of a wheel collar with a wire soldered to it and it fell off, (solder melted) after a minute or so of running. So if you use a homemade connector with a soldered wire, be sure to use a high temp silver solder.

Another problem in our Gas/Glow application, is that you will either have to drill a hole in the side of the plug adapter shell for access to the set screw, or slot the adapter. And all this can be a big pain in a cowled installation.... I like the "Head Lock" style of connector, but it DOES rather irritate me to pay 10 bucks for a simple connector.

AV8TOR