1970 Chrysler 300 - No Power

Can I run a parallel wire around the ammeter? Maybe just by pass it altogether or replace it.
No old wire except maybe the tail light or door wiring where Painless did not supply it. The grounds are the grounds I have had for the last 25 years or more. They are clean.

You can bypass the ammeter, but do not do it with a parallel circuit. You should, I believe, be able to just disconnect the wiring to the ammeter and connect those wires together Some of the other recommendations about checking solenoid wiring, etc are good advice as well. Also, if you haven't, check the bulkhead wiring for corrosion/ poor connections, etc.