I understand there are not actually positive and negative posts but they seem to be referred to that way. In searching most advice says hook the battery side to the positive and the load/regulator side to negative. My Classic Parts wiring harness for my 1952 Chevy says just the opposite. Does the needle on a stock gauge move the same direction as the current or opposite to it.

Without removing the gauge from the truck I do not have any way of putting enough load on it to see a deflection- a test light won't move it.

I would be thrilled if someone can tell me for sure- do I connect the battery side to the post behind the C or the D? I would rather get it right the first time and not have to switch the wires later. It will be a while before the system will be used.

Chuck