Hi Guys, the battery charging gauge on my dash used to give a very steady 14 volts but it is suddenly down to 12 volts. The belt seems fine, but the alternator mounted above the V is in line with the bonnet opening and is showing signs of surface corrosion. Has anybody had a similar issue diagnosed or changed the alternator themselves. If so is there a recommended replacement part number available or any instructions available. I have never worked on fuel injection before, so a little help would be much appreciated.