The circle goes under your spark plug on number #3 cylinder. The sender
(the round terminal is a thermo couple) it emits a minute amount of
current to power the CHT gauge (do not put 12v to this gauge). Red wire
positive other wire black to negative on your gauge. It is recommended
that you not lengthen the wires that come in the kit. If you lengthen
them ....... make solder connections.

Stan Wilder

On Wed, 13 Feb 2002 12:50:18 -0500 Tim & Kim Dayton <5days@PRODIGY.NET>
writes:
> I now have two cylinder head temp gauges with the long "sensor" that
> has the circular crimp on the end.  Where do I bolt this to the each
> head?  I got the gauges without directions.  Thanks in advance.
>
> Tim
>
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