They are not on a circuit... Maybe its just a "thing" with my head unit ya know?

Anyway, There should be seperate wires for both speakers. Each speaker in the car has it's own set of wires running out of the head unit.

 

But wouldn't wouldn't each front set of speakers have a crossover for the tweeter/woofer?

 

Your right, each speaker has it's own set of wires going to it, in the front. I found a diagram for the plugs, but it only mentioned one rear left and right speaker. It didn't say left rear and left rear door, just left rear, etc.

http://volvospeed.com/Repair/radiocon.php

Maybe I just misread it. But if that's the case. How do the rear speakers hook up?

 

Now I have another question. In the sedans, there is a tweeter in in the dash and a speaker in the front door. There are obviously speakers on the rear deck by the rear window, but are there speakers in the rear doors????? The wiring gram only shows one set of rear speakers.

 

Maybe the left rear door and deck are on circuit, not sure tho.

Really shouldn't matter for you though. Your speaker probably just got unplugged. An easy fix though seeing as you can access from the trunk.

I took out the tweeters in the dash... They sounded like sh*t. Instead now, that opening on the drivers side allows me to wire my boost gauge secretly. lol

 

That's what I'm thinking. I don't know how else they could be. I hope I can get it working, I would hate to have to go in there and start re-wiring all this.

 

I'm pretty sure it's my harness. Neither of my driver's side rear speakers work and I pulled out the deck speaker and there's no way one of the speaker wires could have just come loose and fallen out. Although my harness appears to be fine, it must have been pulled just enough to have broken the connection. So, I am going to order a new harness and hope that that solves the problem.

 

I have a 93 and I have had both the tweeters out of the dash and both rear deck speakers unplugged from the vehicle for a while and the others (that are not blown) work just fine. I would check the connection at all the speakers, the amp, and at the rear of your head unit before ordering a harness. Yes, there are a total of 8 speakers in your car, 2 dash, 1 in each door, and the 2 rear deck.

 

But neither rear driver speakers work and the rear deck one was plugged in, so even if that one was unplugged the door speaker should still work. My stereo was recently stolen out of my car, so I'm guessing that when they ripped it out, they had pulled the harness and must have messed up the connections.