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Product # 3987-M

  • 3-3/8" (85.7mm)
  • Air-Core Air-Core
  • 0-190 KM/H
  • Incandescent
  • Download
  • Ships in 2 Business Days
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Tickets are no fun. Calibrating a speedometer isn’t a great deal of fun either. AutoMeter’s Electronic Programmable Speedometer makes short work of both, providing an easy to install and easy to calibrate solution that will help keep your speed exactly where it needs to be. Compatible with most factory speed senders, you’ll wonder why you ever struggled with a speedometer before. Calibration is as simple as a two mile drive, or for even easier operation, AutoMeter’s GPS Speedometer Sender is a simple plug and play solution for any application.

Feature Points

  • Traditional incandescent lighting illuminates around the perimeter of the dial
  • Features lit LCD odometer - capable of registering one-million miles with two resettable trip odometers
  • Compatible with most two wire sine wave and three wire hall effect vehicle speed sensors.
  • Simple push button, 2 mile drive calibration. No dip switches!
  • Reprogram at any time to accommodate changes in gear ratio or wheel and tire combination.
  • Gauge kit includes bulb and socket assembly, red and green bulb covers, mounting hardware, and detailed instructions for installation

Bulb & Socket

  • 3212

Light Covers

  • Red 3214 & Green 3215

Mounting Hardware

  • Bracket Included
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Hi wondering if the odometer is programmable to match a factory speedo it would be replacing? Thanks

Asked by: Jimbobb
Thank you for your question. Yes, after we have received payment for the tach, you can either send it to us or request a certain mileage upon purchasing the tach and we can set the odometer for you. Only we can do this at the factory and miles cannot be taken off an odometer for legal reasons.
Answered by: Zach from AutoMeter
Date published: 2018-11-20

 I have one of these fitted in my 1975 Mazda Rx4 (929) I have fitted it as per the manual instructions but I am finding that the Speedo is dropping you off every now and then sometimes for 5 to 10 seconds sometimes for a minute what  would this be due to?

Asked by: Wheels
Hi there, thank you for connecting with us. This will likely require some additional dialogue and troubleshooting with our Technical Support Team. I would recommend sending us an email with a detailed explanation of the problem you're experiencing and the type of sender you're using. Here is the link to email us. http://www.autometer.com/resources/index/ask_a_question
Answered by: Matt from AutoMeter
Date published: 2018-03-13

Hi guys im just wondering about changing the bulb on one of these speedo's , im looking at going to LED buld and cant see much on bulb location or if it can even be swapped out, any help would be greatly appreciated cheers

Asked by: Luke w
Hi Luke, thank you so much for contacting us. The bulb can be accessed directly from the back of the gauge. Depending on when it was manufactured, there will either be a black cover on the top middle of the back side or a directly wired socket in the same location. It should be extremely obvious as soon as you see the back of the gauge. The bulb is a 194 style wedge base. We offer some LEDs which you can see here: https://www.autometer.com/catalogsearch/result/?q=led+t3+#1&profile=products Hope this helps!
Answered by: Joseph At AutoMeter
Date published: 2018-02-12
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