Dual fuel tanks and valves

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Grit dog

Full Access Member
Joined
May 18, 2020
Posts
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Location
Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
The wires that come off my switch are pink pink with the white stripe light blue and green, there's a black wire hanging there but I don't know if it goes with it
Diagrams say black wire from switch = ground.
 

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