Everything on model trains, model railroads, model railways, locomotives, model train layouts, scenery, wiring, DCC and more. Enjoy the world's best hobby... model railroading!

Switch Wiring Problems

John model O scale and asks readers:

“My problem is that SW2 switches as if it didn’t have external power, and it does, as the train passes over. If I remove the connecting track to the switch from the saw mill loop there is no problem. That solution doesn’t allow a return from the spur to the main line. What am I doing wrong?”

John, you can attach a schematic if you think it helps. Just add a comment under your post and attach the schematic there.

2 Responses to Switch Wiring Problems

  • Robertsays:

    Without a diagram of your problem area it is difficult to suggest a solution. If you are using a reverse loop as in my attached diagram there will always be a short circuit problem that can simply be fixed by cutting the tracks at the points A and B and inserting switches so that A is connected and B isolated and vice versa. The train will need to be stopped between A and B so that the direction on your controller can be reversed before you throw both A and B switches. Electronic gurus can devise a way to keep the train moving through the whole loop.

  • Graemesays:

    If your problem is the same as Roberts drawing, then the solution is a didgitrax AR1 follow the instructions problem solved train enters loop runs round and exits without stopping or causing a short circuit. I use one of these on my reverse loop works every time even on DCC. Best of luck Graeme

Leave a Reply to RobertCancel reply

Your email address will not be published. Required fields are marked *

Add a photo or image related to your comment (JPEG only)

Mining Town Plans

scale model mining town models

N Scale Track Plans

Watch Video

Everything DCC

Download Your Free Catalog

Use Tiny Railroad Micro Controllers

A micro controller is basically a small programmable computer device to help the model railroader “make things operate.” It is clever way to realistically replicate the movements, actions and functions you are likely to see on a full size railroad.


Submit Your Model Railroading Questions!

Before you submit your model railroading question please add some feedback, answers or comments to other postings on this model train blog. What goes around comes around... so if you can help others in the hobby, someone else may help you.

Important - Please add plenty of supporting details to any question you submit (eg. scale, solutions you have already tried etc.) , as the clearest and best questions usually get the best answers. Also, please check your spelling and punctuation as all questions need to be approved by the blog moderator prior to publication. Approved questions are normally published within a week (if not sooner).

Submit your model train questions here.

Watch These Club Videos

Club members access helpful new resources each month: diagrams, video tutorials, articles, track plans and more. Watch the tour videos here.

Scenery Techniques Explained



Model Train Help Ebook

Scenery & Layout Ideas

Share With Friends


Submit Your Article

Would you like to write an article and have it published?

Preference will be given to articles that help others progress in the hobby, maybe suggesting an idea for their layout, a quick tip or two... or perhaps a little bit of good advice based on your model railroading experiences.

We are all in this hobby together, so the more we can do to share ideas and help each other, the better.

Submit Your Article Here

It’s YOUR Railroad!

Your rolling stock and locomotives might actually be the center of attention on your layout, but the scenic features that surround and envelop your layout is what's likely to make your train setup stand proud of the rest. Your selection of scenery and structures will add an element of customization that will make your railroad truly unique.

Scenery, structures, and fine detailing is a fundamental aspect of any good model railroad, particularly if it is intended to replicate a true-to-life railroading scene. How realistic or authentic you make your railroad is entirely up to you... and you alone.

Some enthusiasts like to replicate every tiny detail so as to accurately depict, in every aspect, a miniaturized version of a real life scene.

Others in this hobby adopt a more "free-style" approach and choose to mix and match accessories and features they personally prefer. Even though the purist will possibly be unimpressed with unrealistic or out of context elements, it is YOUR railroad layout so you can make it anything you personally want!

Model Railroading Blog Archive

Reader Poll

Sorry, there are no polls available at the moment.