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    Auto-Meter programmable temperature gauge
    Senior Member
    Join Date
    Nov 2007
    Fort Worth Texas
    I got a Auto-Meter programmable temperature gauge, it has two ground switches. You can program a low temperature point and a high temperature point at which the ground switches will close. By using a DED-HPR Dedenbear relay connected to high temperature ground wire coming from the temperature gauge, at the temperature I set on the gauge , it will close the ground switch and turn on the light on my steering wheel. When I am driving I focus on the track and I need a big light on the steering to warn me if the water temperature is too high. I used a LED rear brake light on my steering wheel. It works really well. They supply wiring instructions on how to install the relay.

    Auto Meter 3654 2-1/16 Inch Water Temp Gauge - Speedway Motors, America's Oldest Speed Shop

    Last edited by stress; 11-22-2014 at 02:44 AM.
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