[Steve]

I installed the fuse block, CC1 and MPA2, wired everything else up. Today I powered up the CC1 for the first time.

What is working: Spotlights, rear deck lights, shotgun rack (release and map light).

What is not working: Siren, PA output. When I set the CC1 switch to Siren (with ignition on) I get a loud click from the outside speaker, indicating that it at least is getting some output from the MPA2. Same with the PA, with a mic plugged into the CC1, flipping the PA switch on the CC1 to the on position results in the same click from the speaker, but no sound output.

Could be the mic for the PA is no good. I wonder whether the horn ring circuit for the CC1 has to be connected for the siren to work at all. I have not wanted to set up the horn-controlled (Manual) siren; I don't think it would be useful.

Tonight I will have to get into the schematics of the CC1 and MPA2 to understand what to troubleshoot.