Bliue dm Posted October 13, 2020 Share Posted October 13, 2020 with negative wire unhooked from all four batteries..... test light hooked to negative terminal on battery checking negative cables.... test light lights up. All wires on the strip have power ( which they shouldn't). When i disconnect this i lose power or (short) on my ground. What is this box for ? Quote Link to comment Share on other sites More sharing options...
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