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Quick Specs


If you’ve tried to get your tach to function after an LS swap, you know that it isn’t always a simple procedure. Save time, frustration and don't make a single cut in your factory wiring with AutoMeter’s Plug and Play LS Tach Harness. This Plug and Play solution lets you quickly and easily install the AutoMeter 9117 Tach Adapter onto your LS-derived engine. OEM spec connectors and wiring assure a hassle free installation that takes minutes rather than hours. No splicing, cutting or risks of voiding your vehicle's warranty. It’s completely reversible and couldn’t be easier. Get the best possible results in the least amount of time with the solution guaranteed to work right, the first time.
Feature Points
  • Does not alter factory wiring
  • Plugs into factory ignition coil connectors
  • 3ft harness length
  • Flying leads to hardwire AutoMeter 9117 Tach Adapter
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I’m trying to get my ls to work with my 72 c10 tach will this work 

Asked by: C10 rhodes
The #2189 harness will not work with OEM gauges.
Answered by: Paul G.
Date published: 2024-04-11

Hello I have a 06 Pontiac 3.9 with stock ECU the tach is a VDO 5150  do you have a tach adapter for this application  Thanks steve

Asked by: MGM 70
Hello, Unfortunately we only have a plug and play for LS motors. The 9117 tach adapter is universal and can work on any other application that would need it.
Answered by: Steve from AutoMeter
Date published: 2022-09-09

I have a 2006 Gen IV LS2 crate engine with a Classic Instruments (non ZST) tach which is roughly 10 years old. Will the #9123 RPM signal adapter for LS engines incl. plug and play harness work for me?

Asked by: Dave1
The 9123 should work fine in your application.
Answered by: Jim from AutoMeter
Date published: 2022-07-29

I am looking to buy the PRODUCT #2095, I am building a 1950 Buick, It will have a complete LSA 6.2 Supercharged Motor and 6 speed trans installed, out of a 2015 Camaro ZL1. Will this harness work? Or do I need a different adaptor? Thnak You, Jim

Asked by: CarBros
If you are not getting a tach signal off the computer on your LS, you may need the 9117 adapter. If you required the 9117, this would allow for a simple plug and play installation of the adapter. We also offer a complete kit model 9123. This includes the 9117 and 2189.
Answered by: Sarah from AutoMeter
Date published: 2021-12-30

will this work with MSD 6010 and will I need any other adapters

Asked by: tom 1109
hank you for contacting us. This tach adapter harness is specifically for our 9117 Tach Adapter.
Answered by: Sarah from AutoMeter
Date published: 2021-10-19

I have a 2011 v6 camaro and I bought 2 after market glowshift clusters. 1 is a tachometer and the second is a water temperature cluster. Each spark plug has its own coil. Do I need an adopter to install these clusters? 

Asked by: Biglou
Hi Biglou, We cannot speak for any installation of Glowshift products. They are a different manufacturer, and you will need to contact them for installation advice. Thanks, Jim
Answered by: Jim from AutoMeter
Date published: 2020-04-24

What’s the difference between the 2189 and 9123 GM LS tach adapters? Thanks 

Asked by: Fredrich
Thank you for the question. The 2189 wire harness plugs into the 9117 signal adapter. If you need to buy both the wire harness and the signal adapter, 9123 is a package including both the 2189 wiring harness and the 9117 signal adapter.
Answered by: Zach from AutoMeter
Date published: 2020-04-26

the 9117 harness adapter will that plug into an LS9 2011 ?

Asked by: Donald 1
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