RE: New Tempest
Rodney,
I had the same remote glow starter problem with my 3M 1.70. This can be solved by running a separate ground wire and connect it to a circular connector. You can get a circular connector with an inside and outside diameter very close to that of a glow plug washer. These appear to be tin plated copper and will substitute for the washer on the other plug. It's a tight fit, but mine works just fine.
Larry
NSRCA 3885