I have two loops of ez trac whith switches connecting them. How do I wre it with one transformer?
Have a look at the hyperlinked thread that follows.
In the second reply to the post, there is a gif. with four basic double loop plans.
Have a look and reply back which one best represents what you have.
If none are close, please post a simple pic of what you have.
Then we can give you an accurate answer to your question.
http://www.bachmanntrains.com/home-usa/board/index.php/topic,967.0.html