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Old 10-14-2018, 11:33 PM
rallystyle rallystyle is offline
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Default Wire recommendations

So i am starting the wiring for the battery and alternator. i am leaving the battery's in there stock locations. i see there is sgt, sgr, & sgx wire. i was thinking 2 ga for starter and 4 ga for the 150 amp alt. any recommendations on type and gauge of wire? both have ls swaps in them. Thanks
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Old 10-18-2018, 09:33 AM
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GM used 2g welding cable for the ground cable in the 2008-2014 Cadillac CTS. It's printed right on it "2 gauge Prestoflex Welding cable 600v"
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Old 10-20-2018, 03:44 AM
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Be sure to use fine strand cable
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Old 10-25-2018, 10:32 AM
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4 gauge charge wire will likely be overkill.

We offer a 140-190 amp charge wire setup that utilizes a 6 gauge charge wire and included the Midi fuse and everything you need: https://www.painlessperformance.com/wc/30700

We also offer a few 1 gauge high quality battery cable kits: https://www.painlessperformance.com/wc/p.php?s=caac
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Old 10-27-2021, 07:43 PM
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follow on to this thread, I have my battery mounted in the trunk and curious what gauge wire is recommended running straight to the starter? Currently have 1 gauge copper and seems to struggle when starting (voltage drops to 10.2v) with a fresh Optima Yellow Top. I've cleaned up the grounds and have a 1 foot 2/0 gauge ground to the body, so assume the long positive run from the trunk may be the issue.

thanks for any help,
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Old 10-27-2021, 08:53 PM
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What size wire do you have engine to frame and frame to body? These grounds should be heavy as well. For my build I bought a 5th gen Camaro cable on eBay. In stock form it runs from trunk to engine bay so it was plenty long enough. I think it was a 1/0 wire. I also have a 1/0 battery negative to body, 4 awg body to frame and 4 awg frame to engine. Also have a 4 awg frame to core support.
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Old 10-28-2021, 12:26 AM
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I have 4 gauge from the body to the frame and multiple 4-6 gauge from the motor to the frame. Initially thought the ground was the issue but didn't seem to help any cleaning and ensuring good contacts and adding a couple new grounding points.
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Old 10-28-2021, 08:05 AM
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The only other thing I can recommend is star washers on all grounds and dielectric grease.
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