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Quick Specs


This fully potted, weatherproof module can be wired to ground / kill switch terminal magneto ignition systems to provide a conventional 12V square wave signal which can be utilized by AutoMeter tachometers and RPM activated devices.
Feature Points
  • Measures 1.5" x 3" x 1"
  • Environmentally sealed and vibration resistant for underhood mounting
  • For use with modern, external coil magnetos running suppression style spark plug wires.
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Should this work with a Cirello Franenstien Mag

Asked by: Rat1089
If this is an external mag, like a super mag, then yes. If this is an internal mag, shoot us an email for more information.
Answered by: Thomas From AutoMeter
Date published: 2022-04-14

Can this converter be used to power an Airguide #1023 tach, on my 1960 Mercury Merc 400 magneto engine?

Asked by: Tripacer4
We couldn’t say for sure, but it’s highly unlikely. Our magneto signal converter is specifically designed to operate one of our tachometers on an external coil magneto race ignition, like a Mallory Super Mag or Vertex OXC Mag.
Answered by: Sarah from AutoMeter
Date published: 2021-12-21

Im using a msd pro mag 44 with a crank trigger, can i use the 9118 signal converter and a 6811 tach with this msd pro mag 44??

Thank you for contacting us. Yes, the 9118 will allow you to use a standard 6811 on a ProMag.
Answered by: Sarah from AutoMeter
Date published: 2021-09-29

will this work with a french grimes magneto with external coil?

Asked by: Casual Carl
Thank you for your question. We would need more information to know if this would work. Please give our tech line a call at 866-248-6357.
Answered by: Natalia from AutoMeter
Date published: 2021-02-18

I have an early diesel with an ISSPRO Sensor (ac signal per them). It is a 2 wire sensor and my gauge is a single wire gauge, I'm assuming it grounds through the other gauges. Will this provide a signal for my Tach?

Asked by: 83dieselK5
Thank you for your question. The only way to obtain a signal off of a diesel using a non diesel style tachometer from us would be P/N:9112.
Answered by: Natalia from AutoMeter
Date published: 2021-02-04

Hello, I have a 1962 Mercury 500 4 cylinder outboard motor that uses a Kiekhaefer (Mercury) 4D-3 magneto with an internal coil. It appears this unit will work for me and will adapt any of your tachs for use with my motor? Thanks!

Asked by: Brian 1962 Merc 500
I submitted the question before reading the other posted questions... in reading those I see that this unit isn't recommended for vintage magnetos using an internal coil due the the noise issue that you mention. Other sources I've researched say that it might work but that Autometer doesn't market the 9118 as compatible due to noise issues. I'm interested in a tach but purchasing the 9118 and a tach is a lot to risk for something that MIGHT work... will you accept returns in the event it doesn't? Thanks, Brian
Answered by: Brian 1962 Merc 500
Date published: 2020-05-29

Hi, I also have a vertex internal coil (IAC) mag and wish to connect to a regular autometer tach. I have a new old stock mag signal converter that fixes to the outside of the mag with a band clamp. Autometer used to sell them. Will this work with the mag?

Asked by: Rugrat
Jim, re-read my question. I didn’t ask whether  the 9118 will work. I said I have an early signal pick up sold by autometer many years ago that is still new. Did these work on the vertex mag  or do you not know of them? Thanks. 
Answered by: Rugratt
Date published: 2020-05-20

Will this unit work with an aircraft magneto to power my Autometer tach ?

Asked by: DonnyH
Thank you for your question. Unfortunately this will not work with any aircraft magneto.
Answered by: Steve from AutoMeter
Date published: 2020-03-05
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