I have a 1968 F250. There is a toggle fuel tank switch on the dash and a switch just under the bench seat on the driver's side. I just acquired the truck but didn't talk to the last owner, although to my understanding, one of the switches may not work.

Just wondering if somebody can tell me which switch is factory because I'm having fuel delivery issues so I want to iliminate one possible problem. I don't have a garage or anything so with the rain and general weather I can't get undeneath it and poke around like I'd like to

This truck is going to be my learning experience for figuring out how all the auto systems work, etc. That said, is there anything else or any specific areas I should look for/at as far as fuses, wires, etc. I'm really trying to avoid taking it to my local shop

 

How many tanks does it have? where are they located?

 

The switch on the dash is factory one I would guess never owned anything but a ford and I never have seen one under the seat

 

Both of th switches are factory the on under the dash is fr the fuel guage the one under the seat is is to select between the tanks.