I understand where your coming from...I too had = trouble trying to figure out how to ground the AFM.  If you look at the = back of the AFM, you'll see 2 bolt holes (un-used) in the housing (6mm???).  = Crimp a "eye-loop" connector on your wire and find a metric bolt that = will fit in one of these bolt holes.  At least, that's how I did = it.
>Is running wire from the #4 = pin(ground ) to the block or alt. bracket acceptable?
Don't know, I was told to ground the AFM housing...
Karl Batzler
84 = Vanagon
87 Audi 5000 S
La Quinta, CA
-----Original Message-----

Installed my tantalum cap. on my = AFM and was wondering; I believe it was Karl that said to ground the AFM housing = to the block or alternator bracket but I found no easy way to attach a = ground to the metal part of the AFM.  Is running wire from the #4 = pin(ground ) to the block or alt. bracket acceptable?
 
Many thanks
 
Dimwitted moose and Flying Squirrel