Alternator to battery wire
Le Mans Master
Joined: Aug 2006
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From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
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You mean instead of changing the original to a larger size? If you do it that way you should put a fusible link on that line too.
2026 Loser of the Year
Joined: Sep 2013
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From: New Or-leens Loo-z-anna
If you do something like that, you should upgrade to a larger gauge wire WITH some type of fuse in'line to keep the car from burning up (or down) if an electrical problem occurs.
Melting Slicks
Joined: Aug 2004
Posts: 2,914
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From: Oakbank Manitoba
The 1980 Corvettes are run like that from the factory. A separate wire runs from the alternator and along the drivers side frame rail, then up in to the battery compartment to a small junction block. Then from the junction block to the battery terminal.
When I changed over to a CS144 alternator I replaced the alternator charge wire with a larger 4 gauge wire then removed the junction block and installed a "mega fuse" in it's place.
When I changed over to a CS144 alternator I replaced the alternator charge wire with a larger 4 gauge wire then removed the junction block and installed a "mega fuse" in it's place.
Last edited by KENS80V; Jun 8, 2014 at 03:15 PM.
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Burning Brakes
Joined: May 2014
Posts: 1,094
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From: Los Angeles California
So for instance my battery amp needle always stays around 5 just a little over the 0. I have to disconnect my battery after I park every time. like last night I forgot to disconnect and this afternoon battery died would this help in charging the battery and keep my light from dimming every time I get a red light. Just wondering cuz if it helps I will also try it any pics or info would be appreciated. I changed my alternator to a msd 120 amp and it didn't make a difference from stock one.
Pro
Joined: Nov 2013
Posts: 730
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From: Catoosa Okla
The 1980 Corvettes are run like that from the factory. A separate wire runs from the alternator and along the drivers side frame rail, then up in to the battery compartment to a small junction block. Then from the junction block to the battery terminal.
When I changed over to a CS144 alternator I replaced the alternator charge wire with a larger 4 gauge wire then removed the junction block and installed a "mega fuse" in it's place.
When I changed over to a CS144 alternator I replaced the alternator charge wire with a larger 4 gauge wire then removed the junction block and installed a "mega fuse" in it's place.
Racer
Joined: Jul 2008
Posts: 258
Likes: 1
From: Gippsland, VIC Australia
The 1980 Corvettes are run like that from the factory. A separate wire runs from the alternator and along the drivers side frame rail, then up in to the battery compartment to a small junction block. Then from the junction block to the battery terminal.
When I changed over to a CS144 alternator I replaced the alternator charge wire with a larger 4 gauge wire then removed the junction block and installed a "mega fuse" in it's place.
When I changed over to a CS144 alternator I replaced the alternator charge wire with a larger 4 gauge wire then removed the junction block and installed a "mega fuse" in it's place.
I have some questions relating to this post....
What is the purpose of the junction block?
Why is the wire between the +ve terminal & junction box smaller?
What amperage should that wire be? Is 50 amp ok?