Need help...have old ( 50's Stud Golden hawk ) fuel and temp gauge. There is no indication as the which stud is the 12V and other from tank sending unit. These are from a car I had them in for many years and worked great. They were replaced by others, and I am now installing them in a '32 Ford old roadster. Can anyone tell me which is the 12V stud. The two wiring studs are vertical and the horizontal ones are just for mechanical mounting.
Read this thread on making you own gauge tester and how to use it to find what ohms range sender you will need. https://www.jalopyjournal.com/forum...-will-work-with-my-dumb-gauge-thingie.862020/