John, check out the VTR web pages. There is a great article on Lucas
alternators by Dan Masters. It has all the info you are looking for.
Vic Whitmore
76 Spitfire
Thornhill, Ontario
Jjcousins@ra.rockwell.com wrote:
> I am in the process of installing a new voltage regulator in my 1977.
> Before I changed it out it was going up to about 18Vat high revs across the
> battery terminals and boiling over the battery! I wired in the new one and
> now I am at only 12.5V steady at all RPM. Questions are:
>
> 1) The new regulator has 4 wires whereas the old one had only 3. The new
> wire is WHITE. WHERE DOES IT GO?????
>
> 2) 12.5V kind of low isn't it? Or is it OK?
>
> 3) There are 2 loose wires (with shielded connectors) that are in the same
> bundle of wires as the large connector going into the back of the
> alternator. Do these need to be connected to the back of the alternator,
> too? Where to? (One is solid white, the other white with a blue stripe.)
>
> Is there a diagram of the connections somewhere? My Haynes doesn't shed
> any light...
> Can anyone help here? I am afraid to drive it with all these unconnected
> wires...
>
> Thanks,
> John Cousins
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