TrumpetRhapsody Posted October 14, 2008 Share Posted October 14, 2008 Hopefully this hasn't been addressed before (probably has ) I've read through the Megamanual and Mobythevan's writeup several times. Searched a bit, and found more dealing with spark than stock ignition wiring. FSM tells me a little, but hasn't filled in all the dots. I went searching with a multimeter at the business end of the ignition switch for the Ignition signal that gives +12v in the run and cranking positions. Weird thing is, the only wire that fits the bill (blue with red stripe) drops to around +4v while in the cranking position. Pretty sure that will close the main relay, and kill power to MS during cranking. I had the starter disconnected, so current drain from there isn't the issue. Am I on track here, or totally off base? Quote Link to comment Share on other sites More sharing options...
X64v Posted October 14, 2008 Share Posted October 14, 2008 I just tapped off Coil +. Relays draw such a tiny amount of current it's not going to hurt anything, and this has power only in On/Start. Quote Link to comment Share on other sites More sharing options...
TrumpetRhapsody Posted October 14, 2008 Author Share Posted October 14, 2008 Won't the ballast resistor come into play by doing that? I've removed the stock coil and ballast resistor, so if I pick either of the two that previously went to the resistor, I'll lose connection in either the run position, or crank position. At least that was the case when I wasn't running the resistor early in my build, and was trying to drive the stock coil with either of the two leads supposed to be going to the resistor. I hope makes sense, lol. Maybe I'm overthinking this. I'll dig back out the multimeter and go coil wire hunting when i get off work. As far as the relays and current, I was just worried that 4v wouldn't be enough voltage to trigger them to close while cranking. Quote Link to comment Share on other sites More sharing options...
X64v Posted October 15, 2008 Share Posted October 15, 2008 Oops, I didn't notice you were running EDIS. Like you said, it's multimeter time. You only have two choices anyways Quote Link to comment Share on other sites More sharing options...
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