Aftermarket Mechanical Temp Gauge Hookup Location

[Gene F]

Remember the critical thing you are trying to protect from temps a little over 210F is the head. Head gaskets fail if overheated. Mine is in the port that originally had the indicator light probe. DMSFRR shows that little bushing I used. on my 1957 Y-block the throttle linkage assembly needs to come off.

If you unhook one, does the problem with the other gage go away?