What you're looking for is the Quantum Link Chamber multiblock. It's a bit expensive, takes a decent amount of power to operate, and you need to make a Singularity to link the two structures, so if it's a relatively small distance, you're probably better off just running cables. Using a Quantum Network Bridge can span any distance, and works between dimensions. Once it's set up, though, anything attached is treated as if it's connected directly to your AE network.
Getting your tesseracts working might be easier. What seems to be wrong? How are you trying to pump items into/out of the tesseract?
I have no clue why the tesseracts aren't working
It goes Quarry -> temp holding chest on top of it -> impulse itemducts into the tesseract -> other tesseract (both on same freq, one set to send items, one set to recieve) -> more impulse itemducts (with levers set so the itemducts are sucking items out) and then off to the ME system
...but it just doesn't do anything. If I pick up the sending tesseract, then plop it down again a bunch of items go in.. then 3 seconds later most come bouncing back again somehow.
But I'll try that ender chest trick - it sound like a good idea