P1800 electrics

DuncanS · Dec 20th, 2006, 19:02

Hi

Just recently I have noticed that the lights on my P1800 ES have started flickering in intensity. When driving at night with my headlights on (of course!) I've noticed that the intensity of them flickers slightly - frequency is a couple of times a second - actually all the lights such as the O/D indicator etc. When the engine is idling everything is stable but as soon as the revs go above about 2000 the lights start to flicker. The frequency of the flicker doesn't seem to change with revs. It is fitted with a SEV alternator.

Anyone any ideas? Is it the voltage regulator? Worried it might be on its way out. Ia there an easy way of testing it?

Thanks
Duncan

Pigeon · Dec 20th, 2006, 22:26

Sounds like it might be the voltage regulator... disconnect the field connection from regulator to alternator and feed the field terminal on the alternator via a brake light bulb from +12V. This will give you an unregulated charge... if it stops flickering you've got it. Don't do it for too long because it's unregulated, but a minute or so to see if it works is OK.

Dec 20th, 2006, 19:02	#1
DuncanS Junior Member Last Online: Feb 13th, 2014 22:41 Join Date: May 2006 Location: Gamlingay	P1800 electrics Hi Just recently I have noticed that the lights on my P1800 ES have started flickering in intensity. When driving at night with my headlights on (of course!) I've noticed that the intensity of them flickers slightly - frequency is a couple of times a second - actually all the lights such as the O/D indicator etc. When the engine is idling everything is stable but as soon as the revs go above about 2000 the lights start to flicker. The frequency of the flicker doesn't seem to change with revs. It is fitted with a SEV alternator. Anyone any ideas? Is it the voltage regulator? Worried it might be on its way out. Ia there an easy way of testing it? Thanks Duncan

Dec 20th, 2006, 22:26	#2
Pigeon Volvo-loving biker Last Online: Feb 3rd, 2019 05:24 Join Date: Sep 2006 Location: All alone in the crazy city	Sounds like it might be the voltage regulator... disconnect the field connection from regulator to alternator and feed the field terminal on the alternator via a brake light bulb from +12V. This will give you an unregulated charge... if it stops flickering you've got it. Don't do it for too long because it's unregulated, but a minute or so to see if it works is OK. __________________ Pigeon's Nest Be kind to pigeons

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