In stock
Product
9117
RPM SIGNAL ADAPTER FOR DISTRIBUTORLESS IGNITIONS
$115.97
Shipping in 2-4 business days
Free Shipping over $99
Hassle Free Returns
Quick Specs
- Instructions: Download PDF
DESCRIPTION:
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
Cancer, Birth Defects and Reproductive Harm www.P65Warnings.ca.gov
- 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"

REVIEWS:
Rated 5 out of
5
by
81svtcoupe 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
QUESTIONS:
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.)
Unfortunately this will not work for you. For further assistance please give us a call at 866-248-6356.
Date published: 2023-03-06
Is there a wire harness PLUG &PLAY for 2020 ford edge st 2.7L to the 9117 tach adapter.......
We do not have a plug and play option for the 9117 that works with Ford.
Date published: 2023-02-13
Will the 9117 Tach Adapter work with my 2006 Subaru Impreza Outback Sport, EJ253, manual. I have a 12v ignition power wire that comes from the main relay to the coil pack that looks like the wire that needs to be cut.
This will work with your Impreza. The 12 volt power to your coil pack must be diverted through the 9117.
Date published: 2023-01-11
Hi, ihave Chrysler LE BARON 1992 the Tach driver board is dead, the signalfrom PCM (AC) is present, but the RPM gauge will not jump. does this work for my car? thank you
No, this will not work for your application.
Date published: 2023-01-06
Will this work on a 1992 Honda Beat? 3 cylinder 660cc motor (E07A)
This is not needed for that motor. Unfortunately with very limited data on that vehicle I wouldn't have any information on where to properly get a signal from that vehicle.
Date published: 2023-01-06
Hi, i have a Rotary 13B engine and i cant get my RPM digital gauge ( AU3387 ) to function accurately. It is a twin coil electronic system. Is a tacho adapter needed ( 9117 )? Can you please confirm the pulse cycle for a Rotary engine. Thanks, Dave
You will need an Auto Meter 9117 tachometer adapter. Locate the black wire with white stripe that is common to all 4 coils. Trace this wire back and cut this wire in a position that all 4 coils are now dead. Verify which cut half of the blk/wht still has power and connect that to the solid red of the adapter. Connect the other cut half to the red/grn of the adapter. Ground the black adapter wire and the gray adapter wire will now produce a good 4 cylinder/2ppr signal.
Date published: 2022-12-19
Will this Tach Adapter work on a 1990 Nissan 300zx TT. I have a fully built motor and I am running an AEM version (series) 2 Stand alone ECU. Currently I am not getting a signal to the RPM Gauge.
That vehicle won't need our tach adapter. The signal can be pulled directly behind the dash off the harness by the gauge cluster.
Date published: 2022-12-12
2000 F-150 5.4 V8 SHIFT LIGHT/ RPM TRIGGER TO RUN NITROUS AND/OR SHUT OFF A/C AT CERTAIN RPM I JUST NEED AN 8 CYL. TACH SIGNAL
Use Tach Adapter (9117). Red or Red w/ Green stripe wire at 42 pin connector on firewall pin 34. Make connection prior to ignition coils.
Date published: 2022-09-09