I have a 3 way switch that the first set of points coming in selects the lower track or continue down to the second set of points.  This is hooked to a tortoise with a dpdt switch.  The led is green when the lower track is selected and red when the rail that leads to the second set of points is selected.  The second set of points is set up the same way with a tortois and a dpdt switch.  Depending on which way the switch is thrown the middle track or the upper track will have a red/green light.  How do i make both lights on the second set of points stay red when the first set of points selects the lower track?  Hope this makes sense.

Will i end up wanting to bang my head against the wall if i build a layout that uses 18 inch radius curves?  Im trying to keep the size down, but i have read posts that suggest 22 is the minimum you should use.  This is a HO layout.

I have been searching the web trying to wrap my head around around all of the things that are involved in model railroading.  I have found that there is a dizzying amount of things that i need to learn before i take the plunge and start buying things without fully understanding how products relate to each other in the entire layout of a track system.  I have found some videos on utube that show how to install automated switches and the wiring that is associated with them, this has proven to be very informative because most of these products when found around the internet don't explain in a way that some who is just getting interested in model rr can understand exactly what they are used for and how they would be hooked up.

I bought my son a Bachmann train set that i plan on giving him for Christmas.  Hopefully this is something that we will enjoy together as we "slowly" acquire all of the equipment needed for a robust layout.

I am thinking that the first thing to do would be to buy a DCC system.  His birthday is January 8, so this would be the first present he would receive as we begin to gather equipment.  Ill just come up with some excuse at a latter date to spend the money on the new engine, LOL

So here goes the questions,
1 What is the difference between DCC and DCS