Hi guys, I need some help with connecting the 4 wires from the telephone cable to the RJ11 Connector.
My telephone wire has red, blue, white, and grey.
When I check on youtube on how to connect the wire to the RJ11 connector, they use a different color scheme: yellow, green , red and black.
So I'm confused on how to wired it up.
Anyone has any experience in this?

Telephone wiring diagram.

Telephone wiring diagram.

The diagram shows red green yellow black.
So how do I map if mine is red, blue, white, and gray?

Telephone only need 1 pair. Red and Green. In your case, try Red and Blue. If not, repeat with White then Grey. Don't worry, won't fry the telephone.

Thanks , will try it