lesterktm Posted November 25, 2018 Report Share Posted November 25, 2018 I am trying to find how to properly wire both the big 3 and an auxiliary battery on a 2018 Chevrolet Express with the RVC alternator system. I have a Cole Hearse smart battery isolator and 2/0 cabling. My question really is do I need to run the ground cable for the second battery back through the GM clamp meter near the factory battery? Or do I just have to run my head lights all the time to keep the alternator from dropping voltage? Thanks for any help. Lesley Link to comment Share on other sites More sharing options...
reedal Posted November 27, 2018 Report Share Posted November 27, 2018 @WalledSonic and @ToNasty i believe may be able to offer some assistance, as they both have newer GM vehicles with the current sensor. SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32 Link to comment Share on other sites More sharing options...
WalledSonic Posted November 28, 2018 Report Share Posted November 28, 2018 Put as many grounds you want and they dont have to all go thru the current sensor. CES (facebook) makes a bypass module. I bought it but havent installed it yet. I highly recommend a self-exciting regulator on your alternator. That way I charged at 14.5 all the time. Worst part is the battery light, but it wont void your inspection. Chevy Sonic Wall (4) 15's on 10k Build Log https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/ (4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts Jeep Wrangler JK (4) 8's in a 4th Order Build Log https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/ IG @walledsonic Link to comment Share on other sites More sharing options...
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