I have a Spectrum 701 with 2 PC boards that bad. I wanted to switch the torch to an old Spectrum 500 that still works because we have a lot of consumables for the ICE 50. Can take out the quick connect from the 701 and fit it to the 500? It looks like the ICE 50 has 1 more wire than the APT 5000 that is on the 500. I searched for wiring diagrams/spec sheet on the torch, but couldn't find anything. I know they sell an adapter but if I can swap them out with out buying anything else it would be worth a try. The extra wire was hooked up to a contact in the 701 and I'm not sure where it would go on the 500 machine. Any advise or comments would be greatly appreciated.