sail panel speakers
If you wire the speaker on one side opposite to the other speaker you won't cause any damage but they will be out of phase. This will cause bad sound quality ("tinny" sound) and loss of volume because the sound waves from the speakers tend to cancel each other out (one speaker cone is moving out while the opposite speaker cone is moving in).
If the speaker terminals aren't marked then usually the positive terminal will be larger than the negative.
In a Camaro, it is important how you wire the dual voice coils of each speaker. You need to connect the two positive terminals together and the two negative terminals together and then connect to the single pair of wires from the factory amp. This is called parallel wiring and it lowers the impedance of the two 4-ohm voice coils to a total of 2-ohms... which is what the Camaro Monsoon amp expects.






