Need help with OG Temp Guage

[Isaiah92260]

How is the temp guage on the dash wired? I have a temp guage that my 63' came with that's after market mounted under the dash that has only one wire that's wrapped in some type of coil which runs to the thermostate housing which I believe is called.... This wire is the screw in style.... Does that also apply with the OG temp guage on the dash panel as well? One wire that's similar? Should I just dis connect that wire on the after market? Or is the OG guage a totally different set up? I'm asking because I want to use the orginal and stop staring at the floor where that aftermarket is at while I'm driving Lol