87 R10 dual tank pump issue and hot fuel module

[Ocho]

I'm doing an LS swap on my truck with carburetor. I'm using the factory dual tank setup with the selector switch and fuel pump relay as original. But I'm bypassing the solenoid valve for the fuel selection Only , it's still being used for the fuel gauge readings. Here's my issue, and I'll include a picture. On my bulkhead connector there's a terminal that comes out with two tan wires. One goes to the fuel take selector switch on the dash and the other wire goes straight to the left fuel pump. This terminal activates with key on. Therefore, energizing the left fuel pump and eliminating the ability to use the tank selector switch on the dash. Question is, should there be two wires coming out of this terminal? Because I can't find any wiring diagrams that show two wires coming out. My other concern is perhaps this feeds to the hot fuel moduleal and it is defective, therefore allowing voltage to pass through the module and straight to the left tank. Been chasing this for a few days so any help is very appreciated

[Captkaos]

I am going to have questions first for a better understanding. 
What issue are you chasing?
Was your truck spec'd for above 8500 GVW and has a Hot fuel module?

Those appear to be tan/white wires coming out of that terminal and it should not an issue since the are connected/spliced anyway.  What are the numbers on that terminal for Brown, Dk Grn, tan/white, X, pink, yellow and lt grn?
120 tan/wht = fuel pump relay
both in-tank pumps and the fuel selector valve
920 tan = left tank pump & selector valve,
921 gray = right tank pump & selector valve
150 blk = ground

The dash gauge switches between tanks by the selector valve. 
30 pink = gauge
930 pink/white = left tank sender
931 pink/black = right tank sender