I recently purchased a 2000 DX hatch and have made a lot of progress fixing up the interior. I'm almost done and I'm about to take on the radio. When I stripped the car I noticed a lot of odd things under the dash. I think the previous owner tried to get an alarm installed or something but it didn't work out too well. In addition, I think he swapped out all 4 speakers in the car.

I'm not quite sure how to wire everything back up. Can I just plug each speaker into the corresponding red and white jack on the back of the aftermarket head unit?

 

This IS Pretty accurate.