Do you have pictures of your truck that uses this method? Not to hijack this thread but I think it would be helpful to others too. I'm in the process of swapping a poly 318 for the original slant 6 in my 1965 Series I and have upgraded to a mini-Denso alternator that has more amperage than my original alternator so have been planning for an upgrade to by-pass the amp gauge and bulk head connector.

Thanks, -EM

" A nice heavy wire from alternator output to the fender relay bypasses both. Fusible link 2 gauge sizes smaller than the bypass wire recommended. A voltmeter is needed with this bypass as the ammeter will not be functional"