Hi all and thank you in advance for any help :).
I am trying to install ring wired doorbell 2nd gen to my existing doorbell wiring. I have also purchased the ring 2nd gen transformer. Does anyone have any pointers to what wire would go where? Apologies if this sounds like a basic question as I’m new to this.
Again thanks for any help
If it is this Video Doorbell Wired model that you are installing, check out the installation instructions here:
During installation, there is a step for using a cable that will disable the chime kit, in which the Ring Chime will be most useful for sound thereafter. You may need to hire a qualified electrician to install a Ring DIN Rail Transformer (2nd Generation). Refer to your local laws and building regulations before performing electrical work. Permits and/or professional installation may be required by law in your area. I hope this helps! 
you may not need the transformer. The bypass cable goes between the 0 and 3 wires. If everything works after you connect the bypass cable then you are good to go. If you get a low power warning then you will need to use the transformer. Its not in the picture - so its likely installed in your fuse box, or near to it.
