Re: 72 fuse box upgrade needed?
You will need relays for your windows and for your fuel pump. Unless I was rewiring the truck harness I would just fuse the power wires to the relays and to the EFI module.
A good option would be this. A power junction from the battery/alternator junction to each of the added loads you are installing. it uses fusible links. This one is from Mad Electric.
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VetteVet
metallic green 67 stepside
74 corvette convertible
1965 Harley sportster
1995 Harley wide glide
Growing old is hell, but it beats the alternative.
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