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Product # 9112

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This compact and easy to install module will allow you to easily adapt AutoMeter tachometers and shift lights and many other aftermarket RPM-based devices on your alternator-equipped diesel or non-standard ignition gasoline engine. Equipped with a sensor which is mounted to the alternator casing, a one time setup calibration is accomplished via push button interface on the module to synchronize the alternator signal with engine crank RPM. Perfect for diesel performance applications looking to add a tachometer or upgrade from factory equipment and a great problem solver for engine swap builds in need of working instruments. Pair it with AutoMeter's low-rev tachometer models to complete your diesel-specific gauge installation.

Sending Units

  • 5315
DIESEL TACH ADAPTER is rated 3.8 out of 5 by 4.
Rated 4 out of 5 by from Sensor works fine, easy to install. Had to use a 1K pull up resistor for the adapter to work with a VDO tachometer gauge. A circuit diagram of the adapter o/p circuitry would have been helpful.
Date published: 2018-04-08
Rated 1 out of 5 by from Poor Sdvertising Company should tell you that it will only work with their tachometer,would not have purchased if i had known . too expensive for Australia
Date published: 2019-12-13
Rated 5 out of 5 by from Perfect kit I bought this item like a month ago, I’m very pleased easy to install fast shipping recommended
Date published: 2020-05-08
Rated 5 out of 5 by from Gréât equipement Just what i am looking to make my tach Working with an old alternator Good product thanks
Date published: 2019-11-12
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Hi. I've got a classic SMITH'S petrol/gas tachometer on my diesel Land Rover Defender. Will this device allow me to somehow get a reading from my diesel engine to my petrol/gas tachometer? Also, do you have a similar arrangement for a petrol/gas speedo?

Asked by: Musa
Hi, This adapter creates a standard tach signal: 12 volt square wave at 4 pulses per revolution. We don't have data as to what type of signal your Smiths tach requires, however. Thanks, Jim
Answered by: Jim from AutoMeter
Date published: 2020-05-12

Jim, I believe you misunderstood my question. Will this adapter work on a neese lavel alternator? My alternator has a large hot and ground and only one other wire that goes to the ammeter on the dashboard.

Asked by: Lenny still lost
Yes it will. I have a 1988 Ford E-350 with 7.3 diesel and it works perfectly.
Answered by: Tim Purdy
Date published: 2020-05-11

Hey guys, I have a 93 E350 ambulance 7.3 diesel that has a neese lavel 165 amp alternator. I am having a very hard time finding a tachometer for it. Help

Asked by: Lenny still lost
Hi Lenny, Any of our standard tachometers will work on your diesel using this 9112 Diesel Tach Adapter. Thanks, Jim
Answered by: Jim from AutoMeter
Date published: 2020-05-07

I have the 2-1/16" IN-DASH TACHOMETER, 0-5,000 RPM, Z-SERIES. It’s a single wire. Can I use this adapter for my 12v Cummins?

Asked by: Red5796
This will work on any of our non diesel tachometers as it will help produce a signal for that tachometer to work.
Answered by: Steve from AutoMeter
Date published: 2020-04-22

Does this adapter allow you to hook up a shift light? Have Z series(2888) mini diesel tach now.

Asked by: S&A 1969
Hi, This Diesel Tach Adapter will drive one of our DPSS shift lights, such as this 5343: https://www.autometer.com/black-dpss-tube-level-1.html Thanks, Jim
Answered by: Jim from AutoMeter
Date published: 2020-04-16

Does this come with rpm gauge? Or what else would I need to hook up a rpm gauge one my 4bt Cummins 

Asked by: Cody' d
Thank you for your inquiry. This device does not come with a tachometer. It is an adapter that allows you to use any of our standard tachometers, which connect to the ignition system on a gasoline engine, to work with diesel engines, which don't have an ignition system.
Answered by: Jim from AutoMeter
Date published: 2020-04-01

Will this work on my 2001 Mercedes , it has a computer driven dash tach and I’m adding a 5 inch with shift light 

Asked by: Silver bullet
NO False Advertising you must have a Auto Meyer Tachometer ,Do Not Buy I got caught.
Answered by: noyb
Date published: 2020-03-18

Will this work on a yanmar marine diesel 2Qm15 It’s on a sailboat in sea water. 

Asked by: Captainchef
Thank you for your question. Please call our tech line at 866-248-6357 for further assistance.
Answered by: Steve from AutoMeter
Date published: 2020-02-24
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