Robert is away this week so I am posting this question from a reader. If someone would like to help this model railroader they can click the comments tag below and submit an answer.
Adele

“I have a H.O. scale set that has a section that I want to bring back the opposite direction. I have the unit to reverse the polarity in the track. And I know how to wire it the right way. The problem I am having is trying to find where I can purchase the Plastic Rail Joiner’s.

I’ve tried everything from shaping a piece of wood to using a piece of wire coating, slicing the wire coating down the middle. To no avail has this helped me keep the track from touching each other. Would your readers please help to find these Joiner’s.”