You could either use a tranfer pump with a switch, or gravity feed it. Were it ties into the filler neck (if you want to pump the fuel) there is a return so it would just pump it back to the tank and not overfill if the switch is left on. I am selling just the tank, so you would need a universal pump, but I could get another filler neck adapter.
There is a cover that goes over the fittings on the top and my tank is a newer style that also has a built in fuel guage.
There are 3 ways to install the tank:
1. Gravity feed.
2. Direct plumb with selector valve (trucks without pump in oem tank)
3. Use a universal electric fuel pump and transfer fuel to oem tank. There is a fuel filler neck adapter that allows fuel in and also sends fuel back to aux tank so you can not over flow.
i am interested too....second in line of course....i have a taneau cover and it would have to be under it....how does the aux pump mount ?.....would be nice to transfer too if possible and still fit under the cover ?
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