I forgot which was which on mine (58) I just connected them and then turned the key on and off real quick to see if the gauge went up or not. It seemed to move a bit harder onto the empty peg so I swapped them and turned it on again. I have "tested" other gauges doing this and not harmed them either (just leaving it on for a fraction of a second).

Probably not the best way to do it but, I have not had any issues.


Mike
1955 Chevy 6400 ex-flatbed (no bed now!) sold September 2023
In the Stovebolt Gallery
1958 Chevy 6400 flatbed W/dump
In the Stovebolt Gallery
1959 Chevy Suburban Owned for almost 20 years, Daily Driver -- sold May 2016
In the Stovebolt Gallery

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