I would like to add a couple inline volt meters so I can monitor voltage on the water. I have added a picture here of something simple that could be attached at the batteries so all I have to do is flip the battery box lid up for a quick reading. I have one 12V crank batt and two trolling batts wired for 24V. I do not have a volt meter at the console dash and would like to do something simpler than running wired and cutting the dash to add a gauge. I know I can add a voltage overlay on my bow or console Lowrance units and alreday have, but the value it displays is after voltage loss from wiring, fuse blocks, etc. I want to see voltage at the batts.
Anyone out there do something similar? If yes, chime in, share pix, where to buy, etc. Thx.