Originally Posted by pizzaguy

If things went to hell when you put the siren in, it's not the PTCM. The alarm siren is wired directly to the CLP/SSM and that's in the 'boot' on (in your country) the driver's side down below the trim and foam insert.
That module is generic, you can exchange it between ANY Crossfire SRT/Limited/Coupe/Roadster.