Two entrance doorbell with just one bell

[amxing]

Just share my experience to upgrade Arlo wired video doorbell from old doorbell.

My previous chime with two entrance, and both terminals in chime were connected, however, only front doorbell was installed. It worked normally with old doorbell. I connected Arlo power kit with trans connection and front connection, the Arlo had solid white led, but it will not flashing to sync during setup. I tried to disconnected rear connection in chime, just keep trans connection and front connections, and Arlo works now. 

[amxing]

By the way, I installed it in the night, and the red dot light keep lighted, which is normal in my case.