I've got a generic automotive temperature meter made by ANC, and I'm
wondering how to hook it up.

I suppose this general non-Mustang related question might be better for
another group, but I follow this group occasionally and know there are
some very knowledgable people here, so I thought I'd just ask here.

I bought this temperature meter from JC Whitney about 15 years ago.  I'm
wondering how to wire the power, and sensor/probe.  It has 3 connections
on the back marked S, G, & I
The meter did not come with a probe or instructions.  Does anyone know
if it uses a thermistor probe, or maybe a type K thermocouple, or some
other type of generic probe I can purchase?  I want to use it for a 12V
non-automotive application so I can probably rig any reasonably
inexpensive automotive probe that will work with this meter.