I have a question about plumbing and wiring a non-stock fuel system. Currently, I have an electric pump mounted on the frame that is feeding a carburetor from the front tank only. Rear tank is not wired or plumbed to anything - just for decoration. Neither pump has any wiring connected, but I can see the 4-prong in-line harness hanging nearby, so most of the wiring should be intact.


Instead of replacing everything with new stock equipment (the pumps originally fed an EFI engine, plus way too expensive) what I'd like to do is simply add a universal selector valve to my current setup.


My questions are:


1) If I'm only running a single pump, and the selector valve is rated for a maximum of 9 psi, where would I put the regulator? The carb needs 5.5 psi, so it should be fine to put that same pressure on the selector. A description of the order of equipment would be helpful (selector, regulator, pump, carb - which order?) Do I need to get a second pump?


2) This is the regulator I'm thinking of getting
Duralast/Fuel Tank Selector Valve FSV4 at AutoZone.com


How do these work? Is it "voltage on = one inlet, voltage off = the other"?


I'd like to use the stock selector switch in the cab, but it's not a big deal if it would be way easier to just add a switch somewhere. I'd also really like to use the stock fuel gauge, so I'll likely keep the stock pumps in just so I can utilize the senders.


Lots of questions, I know. Thanks in advance for any tips you can provide.

 

Bump. Anybody? Can I run two tanks on a single pump...?