C4 CDM Wiring Diagram
Thread Starter
Racer
Joined: Sep 2019
Posts: 278
Likes: 150
From: Calgary AB
C4 CDM Wiring Diagram
I have a 91 coupe and the PO put in a subpar Pioneer single DIN head and changed out the Bose speakers to Pioneers. I am in the process of putting in a original Delco Bose Gold system, I know most get away from those but I wanted the original system... Anyway I have put the Bose speakers back in with amps and hooked up the head unit in the dash to the wiring harness. That harness then clicks into the CDM but... on the passenger side of the CDM the harness is unhooked and the wires are now somewhat wired into the pin that went into the Pioneer. My questions is, without getting the FSM for the electronics is there a place that will show the wiring diagram? I also am trying to find the male end that goes into the CDM. It looks like they put in a Crutchfield harness because the empty end on that harness looks to be the exact same as the set up on the CDM.
With appreciation.
With appreciation.
Safety Car
Joined: Apr 2003
Posts: 3,793
Likes: 9
From: VA
I think you're saying the CDM to speaker harness is mangled.
The only place that I know of with the diagrams is the FSM.
I'm sure someone will share the diagram with you, but... given that you want to go back to stock, I think the simple approach is to grab an undamaged harness from someone who is parting out a car.
I doubt you can get the plug itself new, but haven't looked at that stuff in several years. If you can, it'll probably cost as much as the entire harness from someone parting out.
Most people go the opposite direction so I'd expect those harnesses to be cheap.
The only place that I know of with the diagrams is the FSM.
I'm sure someone will share the diagram with you, but... given that you want to go back to stock, I think the simple approach is to grab an undamaged harness from someone who is parting out a car.
I doubt you can get the plug itself new, but haven't looked at that stuff in several years. If you can, it'll probably cost as much as the entire harness from someone parting out.
Most people go the opposite direction so I'd expect those harnesses to be cheap.
Last edited by VenkmanP; Oct 16, 2019 at 01:45 AM.
