The 12 volts from the battery is connected almost directly. The ECU
completes the path to ground to fire them. The length of time (duty
cycle or dwell) determines the amount of fuel delivered. They are
triggered once/engine revolution. Auto parts sores sell "noid" lights
which connect to the injector plugs to test the circuit. All of the
injectors on the Vanagon are connected in parallel and fire
simultaneously.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
Of tabe johnson
Sent: Wednesday, September 01, 2004 7:55 PM
To: vanagon@GERRY.VANAGON.COM
Subject: What voltage do injectors need to fire?

With the Digifant system, does anyone know what
voltage the ECU sends to the injectors to get
them to open?  I'd need an oscilloscope to measure
this and sadly I'm without.

Thanks!

--tabe johnson
xtabe@yahoo.com
Vancouver, BC

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