Milky oil

[Scott06]

Thanks. I noticed that too. Shows 14.3 on the battery and same on back of alternator. My boat does that also. Not sure why. Faulty gauge maybe?

Ken

if you look at the way a lot of gauges are wired the ignition on voltage from the key is often daisy chained through the gauges, a lot of exposed terminals to get loose and corroded. As lou said that can be a lot of work to run down but connections are the key. Could be in the cannon plug too if you have 14.3 on the engine/batt

 

[Lou C]

True, what I found:
battery on, ignition off, the fuse box positive feed had battery voltage, and the B terminal on the ignition switch had battery voltage
when I turned the ignition on, it would drop by about 1.5 volts, both at the switch and at the fuse box. I tried troubleshooting both the return ground and the positive feed, and the issue was on the positive feed.