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04-16-2025, 01:03 PM
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Registered User
Join Date: Oct 2008
Location: Austin, TX
Posts: 160
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12si upgrade wiring
The 10si alt on my 79 has seen better days. Had a new 12si on the shelf. Got it installed and ran a new 6 gauge wire from the the batt post to a 150 mini fuse then straight to the battery. My question is the terminal 1 & 2 on the alt. On my 70 pickup I dont have a gauge so I wired #1 with a diode and #2 straight to the batt post to energize it. With my 79 I have a voltage gauge so unsure the wiring. Can I use the factory wiring and connector for the #1&2 posts with the batt post going straight to the battery?
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