Originally Posted by
78 Ford F150 460
HIO Silver---the MSD Atomic is not a return fuel system, the FAST is. Had I realized this I probably would have purchased the MSD system simply so I didn't have to plumb a return fuel line...
So you're advising to run another Fuel pump with the same fuel volume as the FAST pump ?
Run a fuel solenoid valve? Would I wire this into the "Y" junction or the toggle switch on the dash? How do I hook this up?
Yeah, I know the Atomic is PWM and thus does not require a return.
Ideally, I'd run two complete fuel pump systems - one for each tank and switchable. The in-cab tank selector switch would select the tank, activate the correct pump, and switch the return line.
Use a three-port fuel solenoid to serve as the tee .. one inlet, two switchable outlets like this one:
3 Way Fuel Solenoid Valve 12v SVO WVO Bio Diesel | eBay
OR... let gravity do all the work and run the auxililary and main tanks in parallel and not switchable.