Suburban plumbing

[rod1701]

So took apart a few things at beginning of summer, broke my foot, not that I'm better can't remember how it goes back together. In retrospect a few cell.phone pics then could have been useful now.

Drained and removed radiator and front of engine to degreaser, clean, and repaint. Got it cleaned and painted. Decided to change back from electric to mechani all fuel pump and upgrade to HD trans cooler. That's where is stopped. Now.time to put back radiator, transcooler, and fuel pump but have and extra piece of.tubing to.connect to.

Trans in and out. Fuel in and out. Plus odd line that seems out of place. Was it connected to electric pump? Did it vent to canister some how?

Any advice, pics, or.diagrams.would.help,