If you interrupt the power wire going to the glow plug relay, not the huge one from the connect point by the battery but the small one which goes to the ign switch it will restart the timing cycle for another 35 secs or so if you need it. The plugs are energised when this wire is given 12V to do this you can run a small pair of wires to beside the GP relay, cut the energising wire splice in the pair and lead these back to a momentary contact pushbutton in the normally on position so that when you push the button the power is momentarily removed from this wire thus restarting the cycle. This avoids using a high current 80 - 100 amp relay and a lot of extra wiring it uses the existing GP relay in pretty much the same manner as it was designed to function. I can't remember the exact color code for the wires so if you are not comfortable with wiring in general and circuit tracing DON"T ATTEMPT THIS MOD Cheers Dan

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