Bulkhead Instrument panel bypass.

As long as the ammeter never grounds out, you are fine. If it grounds to the instrument cluster or internally, you are at risk of the same issues as the charge energy flowing through it. I prefer to not have anything attached to the ammeter.

There are some voltmeters that plug into a cigarette lighter out there. Neat for someone that doesn't want an additional gauge in the car, etc. Plug it in, when you want it out, toss in glovebox, console.
So, if I decide to disconnect the ammeter, should I just cut off the ends and tape them up? Also, now if I wanted to hook up lets say a stereo, I would not be able to use the ammeter studs for a power point, or add an accessory fuse panel from that point. I am just trying to decide what would be the best thing to do. Since I purchased the car, I have had trouble keeping the positive wire through the bulkhead connected. I have taken the bulkhead apart three times over the past 11 years to tighten up the female connector for the positive wire.