Bypassed AmMeter on 63 dart, now I get nothing

You listened to the wrong people. Unless you are running a big fuel pump, aftermarket ignition and a bunch of power eating stuff the ammeter is fine.

Put it back the way it was and drive it.
Yep that’s exactly why I bypassed it, previous owner put an electronic ignition, Fuel pump an amp and apparently a high output alternator (don't know how high output it is). Just trying to avoid a fire between my legs.