"Travel Tanks" - AUX Fuel Tanks

[K2spy04]

Hey everyone,

This will be my first post on here, but certainly not the first time you all have helped me out! I have a '69 C20 Camper Special with the two after market Travel Tanks on the driver's and passenger side. I purchased this truck in July 2015 and found the floorboard manual selector switch was seized up, and the tanks were removed from the equation and the cab tank was hooked up directly.

I'm planning to restore the setup to its former glory. The gentleman I purchased the truck from obviously had issues with the fuel system and he told me he had removed the two tanks from the fuel system. He replaced the cab tank, the sending unit, the fuel pump and ultimately the carb. We had the lovely pleasure of purchasing the truck and on the ride home it stalled out on us. Came to find out he had replaced the fuel line between the pump and carb, but opted to bend a loop in the too long piece of fuel line causing it to vapor lock. Lucky for us it was a $10 fix and the truck runs like a champ.

That unfortunately leaves me with a bunch of questions as to what could had lead him to take the AUX tanks out of the fuel system. I found out tonight the driver's side tank was completely full and I am in the process of getting rid of that gas (not going to put it in my tank).

The entire system looks pretty straight forward and I'm not expecting any major issues, but from what I have gleamed from the numerous threads about the travel tanks is this:

-There is a sending unit in each tank, but the units are no longer available and a universal sending will have to be used

-The sending unit must be 0-90 ohms

-The universal sending units do not have a fuel pick-up line and I will have to have one welded in to hook up to the fuel selector valve

-The fuel selector valve is 4 port with one being the outflow

The biggest question I have at the moment is that the tanks do not appear to be vented, so I am assuming this is achieved by a vented gas cap (which the ones on my tanks are not).

If anyone has some input it would be greatly appreciated. I hope to put up pictures and any/all part numbers I end up using to help consolidate down a few of these threads

Thanks!