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Old 02-12-2018, 06:27 PM   #17
4x4k30
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Join Date: Jun 2003
Location: ga
Posts: 630
Re: 1973-1991 Dual fuel tank systems theory of operation

ok I am still having trouble figuring out how to get my dual tanks and fuel gauge to work in my 77 k3500 with a 6.0 ls engine swaped in ..they are 5 wires on my tank switch blue green tan/white pink/black and tan,,,,, I have bought a new tank switch and Pollack switching valve there are only 4 wires that can go to the new dash switch what wire needs to go where ?? and the one wire that is left there where does it go???? also I tried to put the new switch in the old factory square hole but it acts like the square hole is not big enough any help will be thankful.
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