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        General >> Problems >> voltage regulator
        
(Message started by: Jeff on Jan 26^th, 2011, 5:57pm)

Title: voltage regulator
Post by Jeff on Jan 26^th, 2011, 5:57pm

Have recently noticed the brightness of my lights is not stable - so I deduce irregular voltage regulation.
Am I about to have an alternator failure? The brightness is dimming up and down slightly, at a frequency of about 50 cycles a minute. Throbbing, you might say. It is noticeable when I'm behind a car in stationary traffic. When the revs rise it is steady again, I think.

Any advice on how to check alternator/voltage reg?