Can someone in the Bay Area check out truck I bought?

I just bought a cube van Ford E-350 7.3L and the seller told me he had a tank installed and paid $3000 for a system (have reciepts) and he could never figure out how to use it. It has a switch in the cab with 3 positions. It has a heater part under the hood and a big aluminum tank. Can anyone in the Bay Area show me how to use it? There is a diagram that was drawn up from whoever installed it.
I might be able to pay a little, but hopefully you just want to help someone else run Veggie oil.
Thanks a bunch

middlenameme @

Reply to this post

Enter the characters shown in the image.