EGT gauge wiring
#1
#2
Depending on the manufacture...
You need a constant hot (as in the battery or using a probe find a wire under the dash that is hot all the time) for the constant.
You need a key on power, meaning find a wire with a probe that is only on when the key is in the run setting.
You need a ground (there may be one for lighting and one for the gauge itself-these can both be run together).
You need to tap the dimmer switch for the lighting circuit...
#4
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