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Old 05-23-2012, 11:29 PM   #45 (permalink)
OneOfFew
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Join Date: Jul 2011
Location: Greensboro, MD
Posts: 17

Civic HX - '96 Honda Civic HX
90 day: 40.05 mpg (US)
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Quote:
Originally Posted by California98Civic View Post
With the switching mechanism you have developed, I don't think my setup will work. That's because whenever I turn my alt on while driving, putting the switch back into the off position does not actually turn the alt off until I also shut off the engine via the injector kill switch. Until I do that the alternator itself, spinning, is recharging its field windings. So with your setup, everytime you switch the alt back on, it gets into that state where only shutting off the engine will stop the spinning alt from recharging its own field windings. The ELD system really seems to complicate this mod on these cars. There are four of us now with variations on this idea, all finding it a bit of a challenge.
Thanks for the quick reply. I think you are correct in saying once the field is charged is stays charged even when turned off. Once it jumps to +14v I can't get it back down.

I'm going to try some different stuff tomorrow and report back. I think I'm going to put a scope on the wire to see if it is holding voltage after the switch. If so I may be able to pull it down. If all else fails I'll get 2 dpdt relays to disconnect EVERY control wire on the alternator.

We'll see what happens tomorrow.
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