best way to ground alternator

[wireweld]

I have a chrome plated alternator that I have a hard time grounding, it causes the voltage to fluctuate. I grounded the vr and it helped some and then I ran a 16 ga wire to one of the housing bolts and that helped some more.
How can I get a good ground on this thing?

 

[daredevil]

The brackets ought to ground it to the block and the battery should ground to the block. Maybe clean off the paint at contact points.

 

[nothingbutdarts]

Is there an extra adjuster bracket hole tapped into the alt. case on the front housing? If so run a 10 gauge wire from there to the block and a groung wire from the V/reg. to the block

 

[wireweld]

I need to add that I am using the March serpentine conversion kit and they clear powdercoat all the brackets and pulleys. I think that is alot of the problem, it won't ground thru the powdercoat.
I was thinking of drilling thru the alternator housing and grounding there.
What do you think of that idea?

 

[daredevil]

Just run a wire from a case threaded hole to the battery ground