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Old 03-26-2013, 12:35 PM
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540iman 540iman is offline
resident, old fart
Location: N.W. Indiana
Join Date: Sep 2008
Posts: 1,873
Mein Auto: 2002 540i sport
Originally Posted by gary@germanautosolutions View Post
How about in stead of doing a full gauge set-up that would need a visible mounting location and an audible alarm, just making an add on audible alarm with an adjustable or fixed set point? Maybe a beeping style output for a mild overtemp situation changing to a solid alarm at a more critical temp?

Gary, you are absolutely right and would make the whole deal easier to make and could be hidden under the dash somewhere. Perfect, as we can always get digital temp. from the DIC if we hear the adjustable alarm start to go off. You could adjust up a little at a time until you know it is set for say 110 degrees centigrade. I'll buy the first one. all you need is three wires- GND, +12VDC, and temp input. You researching how to access the temp. input wire in the best manner would be great and with a full 12VDC available to the buzzer, it could be damn loud!

Make it adjustable with small CB pot.


Last edited by 540iman; 03-26-2013 at 12:36 PM.
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