So I rebuilt the mock-turtle, blew up Nessie, and got the orange rod and plate.

Red tram's still not working so I try the orange door. Enter the combination on the orange rod, door doesn't open.

Wha?

Did Boston make some comment about wondering if power was getting to that door panel? If so, then that's the problem you need to solve. Notice that there's a broken conduit nearby buzzing with power? Maybe if you could get the panel off, you could find some way of transferring that power where it needs to go...