Sierra 18-6854 Battery Isolator 160 Amp - 1 Alt, 3 Batteries Dimensions 8 W x 4 12 D x 3 12 H Batteries 3 Alternators 1 Terminals 4 -- 38-16 Max Output 160 Amp Ground Negative Insures battery isolation without needing to check a switch Will not work with Delco CS style alternators California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product Type Chargers Product MPN 18-6854 Product UPC 808282311353