Thanks Rus, for the images. The cluster only has an "amp light" and it appears to be friction installation grounded bulb mount to the metal cluster with only one gray wire to it. I've converted to an One Wire Alternator and am having trouble figuring out how to wire in the "warning light", with the higher Amp output of the Alternator involved. I've added a "Voltage gauge" to help see potential "battery power issues", but would like the "warning light" for "output problems". Another question comes to mind, do the gauges need to be "grounded bezels" to the dash, as I have a thick protective layer on the metal, actually bed liner paint, to prevent rust from humidity, and salt exposure here on the coast, or is the wiring floating ground enough for proper readings? I already had to add a separate ground wire to the fuel tank sender for it to work properly. Thanks to all for sharing your knowledge, and experience. It all helps.