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Quick Specs


This fully potted, weatherproof module can be wired into the power supply of a coil per cylinder ignition system, where it senses current and creates a conventional 12V square wave signal output which can be utilized by AutoMeter tachometers and many aftermarket RPM activated devices. Ideal for vehicles with late model engine swaps and applications where conventional tachometer signals are not available.
Feature Points
  • Compatible with 1-12 cylinder engines
  • Measures 1.5” x 3.5” x 2”
  • Environmentally sealed and vibration resistant for underhood mounting
  • Wire lengths: Gray (signal out) 52", Black (ground) 24", Red & Red/Grn (Ign. Power in and out) 24"
California Residents: Prop 65 WARNING prop65 Cancer, Birth Defects and Reproductive Harm


Rated 5 out of 5 by from Easy to install I purchased this to get the Chrono Tach working in my 1981 Ford Mustang 03 Cobra swap (4.6L Supercharged) project. The instructions was super easy to follow, install was very simple and I was able to hide it in my glove box for a simple easy installation. A++++ for another fantastic Autometer product.
Date published: 2020-03-18
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will this work to connect my autometer 3906 to my 1996 dodge ram 2500 with a v10 magnum?

Asked by: Mistress pulling
This product along with our 3906 will work with your Dodge V10.
Answered by: Jim from AutoMeter
Date published: 2024-03-25

Will 9117 work with auto meter tachometer 4798 To read 1999 mercury outboard v6 2-stroke? Thanks

Asked by: Aaron3042
This device will not work with Mercury Marine applications. See our Marine line for tachometer options.
Answered by: Jim from AutoMeter
Date published: 2024-01-10

I need an adapter that can work for a Harley Davidson dyna s dual fire ignition. I already have a couple tachometers laying around, so if there's a way to make one of them work, that's what I want to do.

Asked by: Poeboy00
We no longer manufacture a Dyna Adapter. Check with Dyna Tech, I believe they make their own adapter for this purpose.
Answered by: Jim from AutoMeter
Date published: 2023-07-26

Hi, Does this have a function so it can operate like a nitrous window ?

Asked by: UKPAUL
The only purpose this was designed for is getting a tach signal off of a distributorless ignition system.
Answered by: Alex at AutoMeter
Date published: 2023-07-24

I have a Crane Hi6N CDI in my 67 VW. This is triggered by a mag pickup MSD distributor. My tach will not operate with the CDI as is. I'm wondering if the Auto Meter 9117 will cure this issue? My tach is an Auto Meter 9304 5" Monster Tach.

Asked by: VW Drag Racer
Unfortunately the 9117 tach adapter will not work on this application.
Answered by: Steve from AutoMeter
Date published: 2023-06-29

will the 9117 tach adapter work on the 8.1 2002 chevy motor

Asked by: phil.s
Please give us a call at 866-248-6356 for assistance.
Answered by: Steve from AutoMeter
Date published: 2023-12-08

Would part 9117 be needed a a 4 stroke, 2 cylinder ATV? The ATV has a coil for each spark plug. Or would it be the same as Deecee 's question? (1 pulse out of the box.)

Asked by: Triz
Unfortunately this will not work for you. For further assistance please give us a call at 866-248-6356.
Answered by: Steve from AutoMeter
Date published: 2023-03-06

Is there a wire harness PLUG &PLAY for 2020 ford edge st 2.7L to the 9117 tach adapter.......

Asked by: limpy
We do not have a plug and play option for the 9117 that works with Ford.
Answered by: Jim from AutoMeter
Date published: 2023-06-03
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