If you had left in the ammeter, you would have a lot more information to go on.
I can't understand why people change out factory designs then wonder why things work poorly.
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I removed the ammeter because it burned out on me. I didn't feel like getting stranded again so I converted it. The factory did a lot of stupid **** and I have changed a lot of it. I don't recall anywhere in my posts that I asked for anybody's criticism about what I do with my car.