Now, that front cross-member ground is a pretty important ground point. And, for whatever reason, if it is not "up to snuff," then your lights and fans will not operate at their peak capacity. Fortunately, this is another spot that is really, really easy to upgrade. Just unscrew it all, clean it up good, buy a longer bolt and incorporate an aluminum "saddle washer" at the cross-member, along with a nice fat 2 gauge ground strap and run it to the driver side cylinder head. Saddle washers are available from aviation web sites. Here's a pic of mine:
