Today I took a break from covering and finished the wiring for the audio isolation amp. I took the cover off of the intercom to adjust the dip switches, which control how the intercom handles music. I prefer for it to mute the audio for incoming vhf transmissions, but not for passenger discussion. Without disabling this feature, everyone would get an “automatic solo” with any singing along. Maybe that wouldn’t be so bad, if it would discourage singing along. I installed the headset jacks in the overhead panel and realized that they would interfere with the aileron cable that runs across the top of the cabin. This is unfortunate, but I’m glad I found the problem now instead of later.