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Old 03-27-2015, 05:52 PM   #13 (permalink)
j12piprius
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pris prius - '12 Toyota plug in prius
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Quote:
Originally Posted by AbramWagner View Post
Do you mean by shutting off the main relay? That's how I have mine, I cut the ground to it on a switch.

What negative does this have, just use more battery power an make the alt work more to charge?
Yes, and yes.

Using the pgm-f1 dropped .05 volts from the battery (with the engine off) each time the relay turned back on. Thus 20 switches dropped the battery from 12.8 to 11.8 volts. Moving the kill switch from the pgm-f1, to the main injector wire shown in the photo above, minimized the voltage drop.
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