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Re: [T3] DBB alternator related subject


> DUHHHHH, Just sitting here thinking about it. Connect the coil of the
> isolator relay to the D+ of the generator. There is no voltage there
> until the engine starts and the generator is above it's cut in speed.
> 12V Gen. cut-in = 2200-2300 armature RPM = 1000 RPM crankshaft. approx.
>
> -- 
> Russ Wolfe

Russ, what's wrong with using the charging light output connection on the VR to
operate the relay for the second battery?  It works fine on mine.  When the main
battery begins to charge, there's 12V on that blue wire to turn off the warning
light.   Not as sophisticated as Bosch's solution, but adequate for me.

Dave.
UK VW Type 3 & 4 Club
http://www.hallvw.clara.co.uk/
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