The red wire in question is smaller than 10 awg. How much smaller
depends on the year. 14 awg will do it for all years.

It isn't the alternator wire(s) to the stud that gets the fuse. It is
the wire from the stud into the engine relay box feed harness.

Mark

Stuart MacMillan wrote:
> It would be easier to install and access one with pigtails like this: http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/Inline-Fuse-Circuit-Breaker-Holder-ATO-ATC-PHILLIPS-Industries/_/R-PHI54350_0459883042
>
> Red wire is 2.5 metric, 10 ga AWG per Bentley. Best to get a holder with 10 ga pigtails and use appropriate butt connectors.  Be sure to carry a spare fuse taped inside the box cover for when it won't start!
>
> Stuart
>