Battery drain issue/ .010 reading on volt meter

[72 Super]

Thanks for the tips guys. I am going to try another meter. This volt meter stopped giving me a reading. It now it just sitting at 0 no matter the function. It’s been along day lol.

As far as accessories go it does have an aftermarket radio and a very old style electric trailer break controller. The horn does not work nor click. I have a horn relay on order. I am going to have to alternator tested this week to eliminate that and go from there.

I will report back after I get the alternator tested.

Thanks,
Ray