I am using 3 of these Mighty Max 12V 12Ah batteries on my Razor MX650 electric bike and they are connected with 12 gauge wire. I would like to tap into the power on one of the batteries with a 20 gauge wire. Is it ok for me to tap into the 12 gauge wire with a 20 gauge wire to pull power? I am actually just going to use it to power a voltmeter on the bike.
UPDATE: @Cubic273.15 Here is an actual diagram of the wiring for the bike, I added what I am trying to do with the voltmeter. I just want to make sure you are saying it's ok to tap into the 12ga wire with the 20ga wire.