MSD 8275 is a 3/8" shielded pickup with a ground
http://www.msdignition.com/uploadedFiles/MSDIgnitioncom/Products/Distributors/8275_instructions.pdf

I know most guys have the 3/4" pickup and I will have to get that also
but I'm sure when it's grounded it would fix any probelms

the grounded black is just grounding the sheath cover to eliminate interference.
thread from MSD forum:
http://www.msdignition.com/forum/showthread.php?t=6790