Need help with wiring and other question.

[93firebird]

I am setting up a layout on two 4x8 sheets with a 2x3 connector between them. It is basically two ovals with two tracks connecting them. Everything is running fine, but I want to know if a reverse loop can be added to one of the ovals using one of the sides of the oval. If so, where do I isolate the loop and connect the reverse module. I am looking to use two remote switches to loop back around to the same side within the oval. Also, I just received my dcc controller and the loco that came with my Red rock express seems to be making a sound which sounds like a diesel hum to me. Is this possible?

[RAM]

This is the old way when using DC  www.outsidetrains.com/info/reverse.html

With DCC this is a better way to go. The reverse loop is a good example. With DC, you need to
not only see that you get the wiring right but you have to worry about locomotive and train
length. Even if that all works, you have to remember to throw that toggle switch before the train
come out of the loop or it's short city. Then you have to throw the toggle back again once the
train is clear of the loop. Instead, you can just spend $32, hook up two wires, and never have to
worry about the reverse loop again. Unless you like to do lots of wiring, chasing down shorts and
spend most of your time throwing toggle switches instead of running your trains, DCC is the waay to go.