Thanks for the info went on their website and TCS AMD4 will fit both loco's . The installation photos show both my loco's .
Only sound options without a LOT of work are MRC, and I wouldn't waste my money on an MRC decoder.
For non-sound, if the SD35 is one big circuit board, the TCS AMD4 will work. If it has 2 smaller boards, the TCS CN will work. The Dash-8 is probably also the AMD4 board.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
I recently bought 2 Atlas n scale locos at a train show both are dcc ready .
One is an SD-35 manufactured in 2000, the other is an Dash 8 - 40B manufactured in 2001 .
Any advice on what decoders would fit these models preferably with sound . I'm new to dcc and any help would be appreciated .