I'm getting ready to do a 4 speed transmission replacement after 284,000 awesome trouble-free miles (preventative action).  Yeah...there is at least one of those heavy braided copper wires and such in and around the area as I recall.  It seems to me that a little sandpaper, a little elbow grease, and a little "real" grease (like Vaseline or White Lithium grease that conducts electricity, NOT the coating known as di-electric grease which is greasy and great at preventing surface corrosion but is poor at conducting electricity) would go a long way for long-term reliability and optimal alternator & battery performance.  Will also do the same treatment on starter electrical connections as well.  That's my plan anyway.
Rich
San Diego

    On Thursday, April 9, 2020, 3:19:17 PM PDT, Alistair Bell <albell@shaw.ca> wrote:  
 
 Funny, I just had the alt out the other day to look at the support bracket. And I cleaned up the alt to bracket etc connections 

Maybe I should re do my engine to body ground or...

And is this silly? 

Add another thick ground directly from alternator case to body 

Ab

> On Apr 9, 2020, at 3:15 PM, David Beierl <dbeierl@gmail.com> wrote:
> 
> 
>> 
>> 
>>> On Thu, Apr 9, 2020 at 5:42 PM Alistair Bell <albell@shaw.ca> wrote:
>>> Gave that a go.
>>> 
>>> Loads on, alternator measured at stud and alt body
>>> 
>>> 14.29
>>> 
>>> On various places on engine compartment wall
>>> 14.23-14.25
> 
> There's your half volt drop right there.  Alternator to engine, engine to  transmission, transmission to chassis.  Measure point to point on 2V scale.
> 
> Yrs, 
> d