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Slippery Slope Victim
Join Date: Oct 2001
Location: Brooklyn, NY USA
Posts: 4,387
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Battery Wiring Clean up
I replaced my battery back in April and it was a major PITA to swap not due to the enormous size of the battery but due to all the ancillary wires on the positive post.
I would like to clean up the wiring by transferring all the ancillary wiring as well as the wire to my Battery Tender to a distribution block. I would feed the main post on the block with a heavy wire but I am unsure what gauge to use. I was thinking 6 Ga. The terminal bus bar is a https://www.quickcar.com/red-terminal-buss-bar-w-covers-57-8012/ The main post on the bus bar is ¼" and the terminals accept smaller ring terminals. What do you think would be the correct size wire to feed the bus bar? Any opinions or ideas are welcome. I would like to clean up the wiring and make it easier to access the battery positive clamp. The bus bar is temporarily in place with double sided tape. TIA Mike  
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Mike² 1985 M491 |
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02-04-2023, 02:27 PM
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Slippery Slope Victim
Join Date: Oct 2001
Location: Brooklyn, NY USA
Posts: 4,387
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Mike² 1985 M491 |
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02-04-2023, 02:42 PM
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PCA Member since 1988
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6ga is enough for 60+ amps continuous current. Unless you have a Classic Retrofit AC system attached to that terminal, I'd go with 8ga. And I'd use the fine strand cable to make it easier to route and move. Use copper crimped AND soldered ends.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners. Cars are for driving. If you want art, get something you can hang on the wall! |
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02-04-2023, 03:59 PM
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Registered
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An auxiliary fuse block with mini fuses for each load co located near by with all fed by a single wire to the fuse block
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1980 911 - Metzger 3.6L 2016 Cayman S |
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02-04-2023, 06:12 PM
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Slippery Slope Victim
Join Date: Oct 2001
Location: Brooklyn, NY USA
Posts: 4,387
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Thanks for the input. I agree with the idea of a fuse panel. Since there are wires that go directly to the starter I am unsure regarding the fuse amperage.
Cheers
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Mike² 1985 M491 |
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02-05-2023, 05:57 AM
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Slippery Slope Victim
Join Date: Oct 2001
Location: Brooklyn, NY USA
Posts: 4,387
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I'll leave well enough alone until I can get a definitive way to achieve my goal. I have no idea as to the fuse or circuit breaker amperage for the starter wires and will not mess with them.
I have searched the BBS and do not come up with a clear cut method. Please let me know if anyone has done this project and what you used. Thanks
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Mike² 1985 M491 |
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02-06-2023, 06:56 AM
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Slippery Slope Victim
Join Date: Oct 2001
Location: Brooklyn, NY USA
Posts: 4,387
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Perhaps this for the starter wires??
https://shop.pkys.com/Blue-Sea-5191-Single-Terminal-Fuse-Block-30-300-Amp_p_7755.html?gclid=Cj0KCQiA54KfBhCKARIsAJzSrdpz nO8Y8insPEXAcYqiUuRsedFN0ItpzUxuPqiHxKPOVrYEokj63K oaApbvEALw_wcB
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Mike² 1985 M491 |
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02-06-2023, 07:57 AM
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I tackled the same thing recently in addition to installing relays for the headlights. As part of the headlight install I added an auto-reset circuit breaker for feed to the relay. I mounted some of the ring terminals that were attached to the batt terminal to the + side of the circuit breaker. At the same time I replaced the the battery terminal with one that clamps the wires in the terminal as shown. All of the larger factory red wiires fit in the clamp with the main wire.
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02-06-2023, 08:27 AM
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