Railroadman posted a great post about his model railroad wiring recently.
Wiring can be intimidating but it is necessary. The most important thing to do is PLAN AHEAD. Don’t add just enough wires for what you need right now. Plan ahead for what you think you will need. Don’t hang them by the most direct route. Plan the routing and make things neat. Have a wiring diagram. Try to colour-code the wires if possible.
All that being said, I don’t have a wiring diagram for my layout yet. However, I haven’t done any permanent wiring yet either. I have soldered drops from the rails and strung some temporary bus wiring to get trains running, but I have nothing permanent. So far my colour standard is red for one rail and green for the other.
The first thing I need to do is figure out where the blocks should be. 🙂