My friend got me this Western Electric loud ringer but I am not sure how to connect it and I do not want to damage it. Can someone point me in the right direction?
Thank you!!

[Linked Image from julianneandtim.com]
[Linked Image from julianneandtim.com]
[Linked Image from julianneandtim.com]
[Linked Image from julianneandtim.com]