Additional Ground Strap Location

[32Bee]

I have a cable which would lend itself well to being an additional engine ground
strap. I've seen a post indicating it's a good idea to use something like that to
ground the starter motor to the frame. The only fastener on the starter I can
see to be used to do that would be one of the long bolts that holds the starter
in place on the flywheel housing. Is there any other area that would lend itself
well to provide an additional ground?