That is, in fact, a ground point. The one I used in my own Bostig conversion, as a matter of fact. Just make sure it's clean, and like Scott says, using the right screw and a bit of dielectric grease can't hurt. Anything that bolts solidly into the chassis can be a ground point

If your alternator is putting out too much voltage, I'd suspect the alternator. Beyond that, I'd give Bostig a call.

-Jarrett
89 Westy powered by Bostig

On Nov 19, 2012, at 2:16 PM, Mike South wrote:
> 
> https://docs.google.com/file/d/0Bw4_lQZfcW6PbC1MRnNXb3kzQUk/edit
> 
> I'm having trouble with my alternator putting out too high a voltage and
> trying to make sure all ground points I'm using are good.
> 
> Thanks,
> 
> mike