Empty FuseBox Terminal

If it didn't matter, this thread wouldn't exist. It is/was just as easily done correctly, per the factory diagrams.
In this particular case, jumping to the other side makes sense from an assembly perspective.
If the optional rear defogger was ever added to a car w/o the factory tach, the kit would come with that jumper. The defroster connector was a push on.
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from [SOLD] - RARE Nos 1967-69 Fastback Barracuda Rear Defogger kit

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from 1965 Barracuda rear defogger