I`m in the process of changing the brushes in my alternator. Ordered them today from Lucas, Ã‚Â£20+ vat. Whilst looking around the forums I noticed that a voltage regulator has been mentioned with regard to the alternator. Could someone tell me where the voltage regulator is situated and what is its function in the charging system? My old girl is a 1991 F75 Fourtrak if that has any relivance. I`d be interested to know any info about the said regulator just in case of future problems that may arise.