Dalmd88 wrote:Unless your car runs extremely hot you will not see much movement on the gauge. Maybe up to 100 C.
Jetlagged wrote:Usually the sensor is a thermocouple. The hot junction is in the engine and the cold junction is in the indicator. It shouldn't be too hard to connect to a 5 v DC input. You would need to ensure the input current was in the milliamps range, which you can achieve with appropriate resistor values. The C-A on the backplate refers to chromel-alumel.
The indicators with the bayonet connector are probably also thermocouple driven. Most of those pins probably aren't connected to anything, it's a standard connector. There might only be the thermocouple input and AC lighting.
Catrik wrote:Dalmd88 wrote:Unless your car runs extremely hot you will not see much movement on the gauge. Maybe up to 100 C.
Huh? That is an EGT, exhaust gas temperature gauge, not coolant/oil gauge if that's what you meant. 750C is the max recommended sustained EGT on a 6.2 diesel so the gauge is spot on.
Okie wrote:It does not get much easier than this.
Good reference for thermocouple EGT and CHT
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