shift light

Printed From: the12volt.com
Forum Name: Lights, Neon, LEDs, HIDs
Forum Discription: Under Car Lighting, Strobe Lights, Fog Lights, Headlights, HIDs, DRL, Tail Lights, Brake Lights, Dashboard Lights, WigWag, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=4771
Printed Date: August 03, 2025 at 1:26 PM

Topic: shift light

Posted By: pro_mtn_biker
Subject: shift light
Date Posted: October 24, 2002 at 1:44 PM

Hello all,

I would like to wire a shift light for the car I'm building. It uses a honda f4i motorcycle engine and we use the wiring harness and instrument panel from the motorcycle. Is there a way to tap into the tach wire and create something to light up a shift light at a certain RPM. Any help would be greatly appreciated.

Thanks, Preston

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Compuer and Electrical Engineering Student CU
Formula SAE Car Team

Replies:

Posted By: toolapcfan
Date Posted: October 24, 2002 at 2:43 PM

I'm pretty sure that if you buy a tach light it will have a tach sensing wire that you hook up to the coil. Then you adjust the point at which the light comes on via a potentiometer that is located in the tach light.

Posted By: pro_mtn_biker
Date Posted: October 24, 2002 at 3:27 PM

I was thinking about making my own unit and custom fitting it into our dash maybe using led's or something like that. Do you know if there is a way to do it without purchasing a shift light?

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Compuer and Electrical Engineering Student CU
Formula SAE Car Team

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