I installed a Digitrax DN135D DCC Decoder into a Bachmann Dash 8-40C N scale, here are some pictures...

http://www.youtube.com/watch?v=hN_Um_KH2xw&feature=youtu.be

This is the F9 Locomotive from the Red Rock train set, it is the same locomotive used for the Royal Gorge F7A and F7B.  In this video I am installing the DN135D DCC decoder from Digitrax.  The next video is installing a LED head light (very bright).  The resistors I used tested at 324 ohms each, the result was 2.99 volts, these are 3 volt LEDs.  I used 2 because I had them laying around.  I have two functions from the decoder left any Ideas?

DCC decoder:  http://www.youtube.com/watch?v=mIbo5zDDSSM&feature=youtu.be

LED Light:   http://www.youtube.com/watch?v=LyKP9XPrkkQ&feature=youtu.be

I just installed the Bachmann (44925) decoder in a B-23 HO locomotive.  Works great and I had lots of high resolution pictures, however they don't allow any more than a thumbnail size picture,  I will just have to work out another way.