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Re: 1973-1991 Dual fuel tank systems theory of operation
i have 77 gmc crewcab with dual tanks did a ls swap and used the 87 efi tanks with 96 vortec fuel pumps and pollack switch over valve my ? is does the dual tank small fuel gauge i got to replace the orginial oem gas gauge need to be wired different for the small fuel gauge to work like it should ?
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