Trying to install 3 way switch. I run 14/3 wire from one 3 way switch to junction box, run 14/3 wire from the other 3 way switch tired the 2 red wires together, tired the 2 black wires together, then with my feed wire tired the black wire to one of the white wires, tired the black wire from the light to the other white, then tired the white wire from feed wire to white wire of light but it kicks out my breaker what did I do wrong.

My doorbell transformer is buzzing. Does this mean it needs to be replaced? Some background: Earlier this week I had guys remove some paneling from some walls. Three days later, I found I had no power in the front of my house, and when I checked the panel, one of the circuits was indicating red -- halfway between off and on. I turned it off, and when I turned it back on, it wouldn't stay. So I left it off. I had an electrician out today, who checked all the outlets and switches on that circuit and changed some. Everything was fine when they left and I went to work but when I came home, the transformer box was buzzing and now my basement family room light switch doesn't work. The circuit looks fine an all the other lights and outlets on that circuit are fine. Obviously I need to get the electrician out again, but is it possible the doorbell transformer is causing the problem? God only knows how old it is; it's at least 10 years old and probably much older than that. It could be 20-30 years old for all I know. Should I buy a new doorbell transformer? and change the switch that isn't working? I know how to do light electrical; I can change outlets and light switches and install wall light fixtures. Can I do this myself?