15V

Best to research the fire issue before you disagree. There is plenty of information available that support the ammeter problem. Sorry it's just the truth.
You made the claim. And I asked you to support it.
Failures can be found. The one 67Dart273 shows is an example. Looks like a truck dash and probably had a plow hooked to the battery. It was probably seeing high loads for long periods of time.
Cars bursting into flames is what I asked about.