We too have a 78 SC. One of my upgrades in all of my updates is that I swapped out all of the old fuses with an updated custom ATO fuse block.
With the cover on, you can’t tell the difference between stock and the new set up. I even went as far as installing the ATO fuses that light up when blown.
I did a complete write up on the install if you want to give it a read. No, I have no affiliation with the owner of the company. He is based in the Bay Area and he is a retired engineer. Nice guy too
Cheers
Trevor
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