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Product # 233905

  • 5" (127mm)
  • Air-Core Air-Core
  • 0-8,000 RPM
  • Incandescent
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Getting great performance or saving money doesn’t have to be choice. Engineered by AutoMeter in Sycamore, IL, The Auto Gage line of instruments provide the best bang for the buck performance in the industry. For a fast street car or a weekend racer, Auto Gage provides levels of accuracy and durability unheard of in the price category. With countless wins in magazine comparison tests, the best value in gauges comes from exactly the place you’d expect it to. AutoMeter.

Feature Points

  • Traditional incandescent lighting illuminates the front of the dial
  • 12 and 16 volt compatible, well-suited with nearly every street car or race car electrical system
  • AutoMeter’s race proven air-core electric tachometers provide quick and accurate readings with a needle so responsive it can go from 0 - full scale in 333 milliseconds
  • Compatible with most 4, 6, and 8 cylinder engines (2 - 4 pulse per revolution ignition signals) with points, electronic, and most 12V high-performance racing ignitions.
  • Optimize use of your engine's power band and improve vehicle run performance and driver gear changes with a rapid response, high visibility user-programmable shift light.

Bulb & Socket

  • 3219

Mounting Hardware

  • 3209
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Hi. Trying to put this gauge on a 1990 Harley. Is it at all possible by adding some kind of electronic parts to make it work? Thank you.

Asked by: Sterling
Thank you for your question. This tach is not designed to be used on a motorcycle as it is not water or weather resistant. It also can only be calibrated for 4 cylinder, 6 cylinder, and 8 cylinder applications which would make it incompatible with most motorcycles.
Answered by: Zach from AutoMeter
Date published: 2019-09-16

Just purchased autometer Rpm meter 233904, clips both Brown and orange for my 4cylinder car. Once engine started, actual rpm running on 2000rpm but autometer show 4000rpm. Can I know how can I set the correct rpm?

Asked by: John Naga
Thank you for your question. If our tach is reading exactly double the actual RPMs with both the brown and orange wires clipped, you will want to soder them back together and then it will be reading correctly. If you have any further questions or need more assistance, please call our tech support team at 815.895.8141
Answered by: Zach from AutoMeter
Date published: 2018-11-20

I hv 5" monster auto meter tac. I installed and it's working some times sits a 0 until u accelerate and then it doesn't show correct rpm. Ss396 bb doing 80 mph at 2000 rpm then sometimes it shows 1k at idle buy is still low when u accelerate. Check good

Asked by: Tim F
Hi Tim, thank you so much for contacting us. The first thing I would verify is that the tach has a good engine or chassis ground. I'd also verify that the tach is seeing >12.5VDC along the red power wire when the vehicle is operating. While it's probably not possible to fully diagnose through the questions section here, our tech team is more than happy to help. You can reach us directly via the Chat link at the top of every page on the site, via phone at 866.248.6357 of via email here: https://www.autometer.com/resources/index/ask_a_question Hope this helps!
Answered by: Joseph At AutoMeter
Date published: 2018-05-01

part # for LED white replacement bulb ?

Asked by: eric
Hi Eric, thank you so much for contacting us. Unfortunately, we do not currently offer a white LED replacement bulb for the Monster tachs. We do have colored options, but not white. It uses a #86 style bulb which are most commonly found in pinball machines due their their high light output and exceptional vibration resistance. I'm sorry I couldn't be more helpful.
Answered by: Joseph From AutoMeter
Date published: 2019-02-03
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