gauge

I am selling the following parts on ebay- All working when removed this winter for an avionics upgrade for my Cessna 340. All being sold with no reserve and are guaranteed to work for 30 days from the time of purchase. Hope you guys can use some of these solid parts. Garmin GI 106 A...

1973 172M. Has a CHT gauge (analog style) that the previous owner said had not worked for a very very long time. The probe (supposedly on the #3 cylinder) 4-cyl Lyc E2D is disconnected I think as it was Inop for so long no one bother reconnecting. How hard is it troubleshoot/replace the analog...