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I put some new guages in the HMMWV. The old ones were hard to read especially at night so these new ones went in and I lost some of that "been in a war zone" pantina. My old voltometer guage only had one connection in use, the new one has two. I reconnected every wire correctly and still have the same "yellow" reading. The reading was the same on both old and new guages. I've never had to charge the batteries. Am I missing a connector? This reading seems low. First picture shows guages at idle engine speed. Thank you for all the help in advance.
HMMWV Volt meters are not the same as the ones found in all the other Mil vehicles....that single plug is correct, plus a ground, So if the Gauge came from an M35 Duece...not sure if it will work. looks like your Volt gauge is not for a HMMWV...I only know this cuz I bought some volt gauges sometime back, when I compared them it was just like your Pic, I had to find a HMMWV specific guage....Also, you can pull down the entire wiring schematic for free on Kascars web site, look on the main page on top for "Manuals" .