I am trying to fill my last blank spot on the side of my cluster and found a voltage gauge at the local junk yard. Unfortunately, someone else cut all of the wires from the back of it (probably after they took the other gauge that was missing!). I can guess that it will need a + and - signal along with some + voltage to feed the bulb. What I don't know is where to get the signals needed. Does anyone have a fool proof, color coded instruction?

I learned my lesson the last time I pulled my cluster and accidentally plugged the tach wire into the speedo...now I ask first!

Thanks