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Everything posted by PeteB
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<p>If she senses through the alternator, it still takes voltage pulses per revolution but more of them! If you have a green light, speed is being sensed (does it change to red if the revs are dropped?), so 12v should be sent to the solenoid. I'm no mechanic, but sensing through the alternator is many times faster and more reliable and it isn't a special alternator but I could not tell you how it works exactly!</p>
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<p>Sounds like an electrical issue. Check the wiring from the box, from inside, through to the Hershman plug on the solenoid. It should get 12v at max speed which drops off as the revs drop. The light should be green at working speed, if it is still red, it is not receiving a signal from the alternater or the sensor on the flywheel bearing depending on age. The sensor takes pulses off a bearing collar and should have a indicator light to show it is registering a pulse. The gap between the lugs on the collar and the sensor can be from 1.5mm to 6mm I believe. Try looking at these for a result.</p>
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<p>Rich, I've forgotten my login for this section, please cut and paste this response. Cheers</p>