I have seen these sold from a fellow  in Canada. I will try and find the link and report back. 

I'm sure these are sold state side too but I so not have that link

T. 

On Jan 21, 2014, at 8:25 PM, "SDF ( Scott Daniel Foss )" <scottdaniel@TURBOVANS.COM>

you could also buy an adjustable solid state voltage regulator/brush
package for a Bosch alternator.

the guy that turned me onto those...a starter/marine/alternator
rebuilding shop ..set his at 14.5 volts.

> 
> Reg/brushes ? in that time span and the use cycle?
> 
> Is the test just to get some new brushes and stick em in, then check the
> battery input again?
> 
> Thanks, Don H.
>