There are little dots along the lines in many wiring diagrams, like in response to the question "How do I know if a ceiling fan with light and the switch are wired correctly?". Some of these seem to indicate a junction with another wire, or a color change, but some are just in the middle of a single color wire. What does this indicate?

Also, why does the color change along a wire in a diagram?

1 Answer 1


Are you talking about the orange/yellow dots in this?

Wiring Diagram

These are not standard wiring diagrams, they're just drawings that Tester101 makes to make his answers easy to understand.

He appears to be using the orange/yellow dots to indicate splicing the wires together using a wire-nut.

  • 2
    And the white wire with a black color change near the end is a white wire with black tape on the end to mark a switched hot.
    – BMitch
    Nov 22, 2013 at 13:42
  • Yes, those are the dots, but why have them along a single color line like the orange ones red and green lines? Nov 22, 2013 at 17:15
  • @curiousburke Because you're splicing two wires of the same color Nov 22, 2013 at 17:16
  • oh, because the components have wires that you need to wire to. I didn't realize wiring diagrams were that realistic. Thanks all! Nov 23, 2013 at 5:27

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.