Aaron,
Do you have a Volt meter with a Ohmmeter option?
I would try to get a resistance reading on the speaker wiring.
What I mean by that is touch one of the dvom leads to the head unit harness and the other to one of the speaker leads at the door.
Any ohm reading of 5 ohms or less is considered a "good" circuit.
Let us know how that turns out.
Pm me your phone # if you need more info.
Do you have a Volt meter with a Ohmmeter option?
I would try to get a resistance reading on the speaker wiring.
What I mean by that is touch one of the dvom leads to the head unit harness and the other to one of the speaker leads at the door.
Any ohm reading of 5 ohms or less is considered a "good" circuit.
Let us know how that turns out.
Pm me your phone # if you need more info.