Installing new Hardin voltmeter in boat - Question - When hooked up my voltmeter goes past 16 and holds steady - Back of gauge has I, G, S, and blank post (Assuming for light). If I'm correct the I = ignition, S = signal = battery, and G= ground. Am I missing something here. Of course Hardin Marine did not sent any instructions with the gauge so I've been trying to match the previous gauges. One other question, when hooking up the voltmeter it arked - no big deal, figured it blew the fuse I have on the ignition wire to the voltmeter. However when checked the fuse was not blown. Also checked the reset switch on the wire terminal on my block - was not popped. Problem now is that when turned to acc juice is coming through - voltmeter maxed out, fuel level right, but when turned over - no go!! Happened before and it was the reset switch on the terminal - any ideas what else to check. Sorry for the lengthy post, but thanks for the help.