Had to change the alternator recently as it was sending the battery 18v+ at idle. Also made the abs and battery light remain on. I put in a new battery too as it boiled the other one.
Got that all done and the voltage at idle is 14.4v. But if reved slowly it remains at 14.5 ish but if revved quickly it's like the regulator can't keep up.. increases to 14.8v then back to 14.4 ish.
I now have a very dim battery light on which seems to change in relation to the revs. Checked belt and alt connections all OK.
Anyone had this before?? I do have a single green blue wire with a crimp attached just not connected.. seems to come out of the same part of the loom but I imagine this is from the air con I removed ages ago..