Battery Voltmeter Installation Question
I had problems with my 12 volt system on my FW and when I pulled the battery I found that it was only putting out 7 volts. The rig stays plugged in all the time. A few weeks ago someone posted a t...
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When I installed mine, I just placed it where it would be most convenient to monitor at a glance. That was near the control panel at the entrance door. Made for easy wiring too.
I'm sure it reads a one or two tenths of a volt less than it would at the battery terminals. But it still registers by tenths of a volt when the pump turns on or we hit a light switch, so the info of relative loads is useful. I would find it much less useful if it were hidden in a compartment with the batteries.
Try to make sure you connect the negative to a wire that runs all the way back to the battery bus. Not a chassis ground.
If I want to check actual battery condition, I'll dig out a digital VOM for that occasional task.
I'm sure it reads a one or two tenths of a volt less than it would at the battery terminals. But it still registers by tenths of a volt when the pump turns on or we hit a light switch, so the info of relative loads is useful. I would find it much less useful if it were hidden in a compartment with the batteries.
Try to make sure you connect the negative to a wire that runs all the way back to the battery bus. Not a chassis ground.
If I want to check actual battery condition, I'll dig out a digital VOM for that occasional task.
