Run a jumper from the positive to the other positive
Run a jumper from the negative to the other negative
If your asking this question I would also suggest you read the well written owners manual. It will also address bi wiring and tiltback.
Bi Wiring is an advantage to the amps recovery if the bass / mid Hi sections are independently run, the load the amps sees from woofer excursions is better dealt with.
Whatever wire you run on the top run the same on the bass.
Best,
JohnnyR