Speaker phasing in '03 Elantra GT

Hi, folks...

I'm trying to install some aftermarket (Alpine) speakers in my '03
Elantra GT. I have the old speakers out, and the new ones mounted
onto the factory grilles or trimpieces or whatever they're called.

So--on the left rear, there are two wires, a yellow and a black. On
the right, they're orange and blue. I'm making the assumption that I
connect the blue wire and the black wire to the same terminal on both
speakers to get the new speakers in phase, correct?

(Obviously, I'm using the Hyundai wiring up to the speakers.)

Thanks for any and all help!