Having just changed my 6 year old battery I am still getting lousy voltage accross the new battery as well. In my case about 12.7v at 5000rpm rising to about 13.3v if I turn the lights off.
I have checked my altenator output and it is about 85V accross the 3 pairs. So I guess I have a knackered RR. Any recommendations
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Not Grumpy, opinionated.
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