Doppleganger
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Pollack Valve Wire
- Thread starter Doppleganger
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Ricko1966
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The pink wire is the ground side of the gauge. The gauge gets power in, the pink wire passes ground through the ******* valve and the selected tank,the sender puts a varied ground of 0-90 ohms of resistance to ground. So for examply 45 ohms resistance to ground through the sender would be 1/2 tank
Doppleganger
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Thanks.
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Pollak is not band though………..
75gmck25
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Is your ‘85 truck a mixture of old and new, because the single wire Pollak tank valve was only used on earlier trucks. Your ‘85 should have a six wire valve. Also, the picture seems to be of the fuel sending unit, not a tank switching valve.
Doppleganger
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There was 2 different questions - 1. what does the pink wire that goes to the gauge carry....volt, ohm, etc, and 2. what is that single wire with the button end on the sending unit for?
Since I am going to FI, I am swapping in new sending units (and Pollack valve) from an 87. They do not have the button head connector, so am wondering if I even need that wire for FI. My original wiring was damaged and partially hacked - plus is for an 85 - so I have nothing to really go on. Trying to build a new harness from scratch to work with my FI, intank pumps, etc.....and to wire them so each tank has its own fuel gauge.
I think I've got it figured out.
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