Remote glow adapters always leave that bit of doubt in my mind when an engine will not start quickly.</p>
What has helped me is not cheap, but it works.</p>
http://www.heliproz.com/prodinfo.asp?number=111333
This glow driver lights up a corresponding number of LED's according to how much current the glow plug is drawing. At a glance you can see if the glow is really being lit. After you use this driver a couple of times you will know how many LED's should be lit for a particular glow plug in a particular engine. With most of my engines the Radio South driver lights up four of the LED's.
Bob</p>