Thanks, guys. I actually have both types of extensions--one that bolts on to the engine back plate and one that has a separate ground wire. For the latter, I've tried grounding to the back plate as well as the engine mounts but no joy in either case. Thanks, Ross, for the tip on the the clip not touching anything else. Pretty sure that it's not, but I will double check. And thanks, Chris, for your kind offer, but that's not necessary since I have several of these silly things.
At this point, I'm going to throw in the towel and go back to the SwitchGlo. I previously had one, and it worked great until my N5c took a 5-hour long "shower" this summer that killed most of my electronics. I have been going old school with the manual glow driver since then.
And as for the "shower," the family and I rented an RV this summer for a 1,000-mile vacation. On the way back, I had placed my heli in one of the "waterproof" storage bins underneath the coach. We then proceeded to drive through a huge rain storm that lasted a good 5 hours. The next morning, once we arrived back home, I opened up the bin to find my heli soaked and sitting in a pool of water that was literally 4 inches deep. Not pretty.
