Another Ammeter bypass question:

crackedback said

That's the mad approach, not on my cars!

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Ok so use the diagram but bypass the bulkhead as well.

Only reason the feed from the alternator comes thru the firewall on the way back to the battery is to run an ammeter gage. If your eliminating the ammeter, then eliminate the alternator output from running thru the bulkhead and let it go straight to the battery.