Before you begin, you should know that the larger your model train track is, the more complex wiring and set-up will be. Additionally, you may need to use a heavy gauge wire as a bus for the track and may also have to run a number of feeders. Experts recommend that you fasten your train track to a foundation so that it is as secure as possible. Plywood is generally an inexpensive and effective material to use for this.

One of the keys to wiring model train tracks is to keep track of which wire is which. Using different-colored wire is a great way to keep track of your wiring patterns. For example, you could have the outside rail wires be red and the inside ones white to mark the negative charge.

Most experts agree that the right hand rule of wiring is integral to a successful track layout. Basically, you want the train to travel the track layout to the right or counterclockwise direction from where you stand at the power pack. When wiring, this means that the outside rail would be positive (+) and the inside rail would then be a negative (-) rail. It’s important to keep in mind which rails are positive and negative so that wiring is made that much easier.

You can wire the toy train wires to the model’s track in a number of ways. The most popular way is to solder feeder wires to the outer side of your rail. An 8 place terminal block is a great way to keep track of your wires. For example, you can connect all of the wires here and keep yourself from doubling up wires in a power pack. You don’t want the vibration from the pack to result in loose or frayed wires. Attaching the wires from the pack to the block is easy: all you have to do is strip some of the insulation from the wire, loop it around one of the knobs or screws of the terminal, and match up the charges.

Beginners should start simple so that they can master the basics of wiring and soldering. Once you master a simple model train toy track layout and its wiring, you can start experimenting with more and more complex layouts and their wiring. Soon, you’ll have many trains running on interlocking and reversing loops of track.

Click here to download a free model train guidebook filled with hobby tips, ideas and information.

One of the most popular ways to do this is through the device called common rail wiring, the basic concept of which lies in always insulating the same piece of rail, while leaving the other one still connected. Sketch and/or draw a layout of your system that shows the dual tracks while marking the outer and inner rails as “plus” and “minus” respectively. In the example of an oval track layout, this means that the outer rail will always be positive no matter where it goes, and the inner rail will therefore also always be negative. The benefit of this is, once you have insulated the inside rail on every siding (even those controlled via on-off switches), the outer rail therefore becomes akin to common ground, while the inner rail resembles hot switched lead. This is why this method has become known as “common” rail wiring for the model train. Two different power packs are recommended for this system, both insulated from each other (such as in the cases where an oval is inside an oval), as they can then have the ability to control different areas of the layout in the same instances. Both packs need at least one wire to be attached to the common rail, with a second to go to either the insulated rail of the oval or to the sidings in order to be controlled.

The common rail system is a very popular one, primarily because it enables the system to pass on control from one of the packs to the other, with the model train on the track thus gaining power from the right side of the front truck at the same time as it is getting it from the left side of the rear truck. Minus the common rail, the model train would otherwise regard the insulated joint as a malfunctioning switch and would thus then just stall on the track. Just be prepared for the possibility of the model toys surging unexpectedly fast when crossing over the joint!

One last point – remember to double insulate on the section of the track where you require the train to reverse back on itself – this means that the positive rail will suddenly run smack bang into a negative rail, and thus an insulating gap and plastic joiner are essential here. A DPDT (double-pole, double-throw) switch will be required for this operation.

Aside from this, however, the common rail wiring should be the best solution for your model train toys system.

Click here to download a free model train guidebook filled with hobby tips, ideas and information.