Wyotech Rev Limiter for magneto
 

As far as i know, this was the only magneto rev limiter ever available, and is no longer made. Used but fully functional. It was for Vertex mags, but perhaps it works with other mags. Three RPM settings from 2,000 to 9,900 in 100 RPM increments:
1> Low limit- selected by an external signal.
2> High limit- active when Low limit not selected.
3> RPM Switch- NC and NO 20 amp relay contacts to control an external device (transbrake release, nitrous solenoids, etc.).
$200 plus shipping.

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I have same vintage rev box. Not sure if it works. Can you post any instructions that you have. Thank you!

I'll be glad to post the Wyotech literature... but I need to wait for the wife to replace her failing scanner!
In the meantime, the image above shows the color codes of the wires, which is all you really need to know.
Do you know if yours is for Vertex or for Mallory mag? There's nothing on the unit to identify it- I just know that I specified for Vertex when I bought it.

I think mines vertex. It looks like two different instructions are posted. The one I'd like to see is covered up by the box. Im interested in buying yours but not sure how you want to go about it. I'm in springfield missouri.

Mine is for vertex but not sure if it works. It looks to be two different instructions in the pics. I need the one with the box covering it up. I'd like to buy yours then I'll have all the instructions and a extra box incase this one doesn't work. How do you want me to pay? And how will I know it ships?

Got the scanner fixed.