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I don't think you need to worry. The repair manual says:
Removal:
Disconnect battery ground cables and remove the fuel tubes from the valve as outlined.
Remove electrical connector.
Remove the two bolts mounting the selector valve.
Installation:
Follow removal procedures in reverse order.
Tighten selector valve mounting bolts to 9-12 lb-ft
Yeah, but I want to still drive it with the wire harness unplugged and I need it to stay selected on the Front Tank, If thats not possible I wont worry about it.
The switch reverses the polarity going to the valve and the valve is motor driven, it will remain on whatever tank it's on when you unplug it. The valve also controls which fuel level sending unit is being read, once you unplug the harness you gauge will no longer work.