Alarm Problems with new Audio System

[DCP]

I replaced my radio and now Ihave the problem with the alarm beeping when I lock the car. The car is a 2003 996 originally with the base sound system. I have looked at other posts on this problem which describe locating brown with green stripe (or blue stripe) wire on the left side of the radio compartment. I tried to locate this wire, but Icannot find it. I could not see any wires on theleft side except those that run to the PSM button and the wiper rheostat. Perhaps the alarm portion changed when theywent to the MOST bus system?

Any help is greatly appreciated.

[Loren]

If your car is a MY2003 then your radio should have been a CDR-23 and part of the MOST system.

You should use Durametric or a PST2 to see what is the real alarm fault.

[DCP]

Loren:

It did have a CDR-23. Since it was the base audio system with no amp or CD changer, nothing was connected to the MOST connection (Connector G). I have a feeling that the alarm info might be transmitted through the CAN bus (Connector C - yellow).

If your car is a MY2003 then your radio should have been a CDR-23 and part of the MOST system.

You should use Durametric or a PST2 to see what is the real alarm fault.

[Loren]

The fault code will tell for sure.

[petespokerplanet]

I had this problem, but mine is a 2000 model, so I'm not sure it would help on your model 2003 car. My wire was connected to a grounding tab, which looked like a spade connector, which literally was mounted parallel to the left side of the back of the radio. I just taped mine off, and the problem went away.

[Loren]

This is the wiring input/output for MY2003 996 Radio. As you see the only possibility is if the signal goes over the MOST bus.

I still say get the alarm fault code(s).

[rogerjohnsen]

I have a MY '03 that had a CDR-23 (MOST) replaced with an aftermarket stereo so am pretty sure our setups would be identical. There was no wire that had to be grounded in this configuration so getting the alarm code as Loren suggested would be essential. Are you sure the center console is latched / closed? That seems to be my most common cause for the beep when setting the alarm... :/

[DCP]

The center console door is latched, but I had removed the center console so there is always that possibility that I did not get the switch for it back in correctly. Are you saying that when you replaced your sound system that you did not have this problem? That would suggest to me that the console switch is the likely problem.

I have a MY '03 that had a CDR-23 (MOST) replaced with an aftermarket stereo so am pretty sure our setups would be identical. There was no wire that had to be grounded in this configuration so getting the alarm code as Loren suggested would be essential. Are you sure the center console is latched / closed? That seems to be my most common cause for the beep when setting the alarm... :/