sail panel speakers wont work!!
If you have a Monsoon system then the problem isn't with the wiring because your other speakers are working. You only have four channels of output from the head unit and they must be working or you would have other dead speakers in the car. Since the sail panel subs work with the stock head unit, I would check for settings on the HU that might have turned off bass output.
If you have a base audio system then it's possible the rear speakers (your sail panel speakers) aren't connected properly.






