Reply To: Mod 3 unit 3: Mechanical timer 1 Home › Ask the Teacher Forums › Advanced Schematics and Troubleshooting › Mod 3 unit 3: Mechanical timer 1 › Reply To: Mod 3 unit 3: Mechanical timer 1 August 1, 2019 at 10:13 am #12250 Neal Strotman Is it cam 6 12&13?