Aux input ?

[Not Anumber]

The Mjlj v3 I am about to fit has an external Aux input circuit built on a daughter board in the case. This is wired to the Molex in place of the User Out 4 pin. There is a note this is a resistive input but I cannot tell if it is meant to measure resistance between this input and Ground or between this input and + Volts ?

Would it be best to connect this to an engine temperature sensor or are there other better uses for the Aux input? It is being fitted on a simple pinto engine.

[brentp]

It really depends on the design of the input circuit board being fitted to the case. If it has the necessary pullup resistor inside, then it's likely that a simple single wire to the external temperature sensor would work.

if you could post the schematic for the daughter board that would help. Let us know!

[Not Anumber]

It does have the pullup resistor. I will fit a secondary temperature sender.