I'm good on all my connections its odd that the whistle blows on many of the numbered buttons and on bell button
This board has 2 serial data wires on J4 connector I used pin 1 and soldered it to pin 24 on r2lc and left factory serial wires to tether as is I didn't use wire on pin 2
The directions show it as data out to sound and as optional Do they want serial data to flow thru ccm ?
How infrequently do you get bad boards?
Should I send it to Gunrunner John or back to ERR?