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Discussion Boards => N => Topic started by: macbmac1 on October 31, 2009, 10:32:48 PM

Title: Decoder selection / install inquiry
Post by: macbmac1 on October 31, 2009, 10:32:48 PM
Hello everyone:
I have a  Spectrum 4-8-4 J-Class loco, which is advertised DCC ready.  I have done a few decoder installs before, but opening the tender on this loco shows a PC board I am unfamiliar with-no standard 8-pin NEM socket.  Instead, it apparently has 2 sets of inline sockets, with what appears to be phosphor bronze clips over the PC board-the included manual doesn't seem to be much help, as it states to connect the wires together. I was wondering if anyone has installed a decoder into this loco, and if they might have any suggestions?  Any help / input is greatly appreciated.
Thank you in advance for your time and consideration,
very sincerely,
Michael
Pahrump, NV
Title: Re: Decoder selection / install inquiry
Post by: skipgear on October 31, 2009, 11:11:02 PM
Check page 3 of your instruction sheet included with the loco.

http://www.bachmanntrains.com/home-usa/dwg/dwgs/N821X-IS001.PDF

It gives the pinout and appropriate NMRA color codes for the wires. You remove the jumpers and solder your decoder as indicated by the instruction sheet.
Title: Re: Decoder selection / install inquiry
Post by: macbmac1 on October 31, 2009, 11:48:35 PM
Thank you for the reply.  I did check the instructions, and I guess they through me for a loop when step 3 states to "Connect the wires directly to the decoder wires..."  From what I can ascertain, I need to solder the decoder harness wires directly to the PC board, following the included diagram.  Thanks again for the reply--
Mike
Title: Re: Decoder selection / install inquiry
Post by: macbmac1 on November 01, 2009, 10:31:17 AM
Upon further research in this forum, I came across this photo instruction for the install:
http://www.bachmanntrains.com/home-usa/board/index.php/topic,2676.0.html
and believe that I can now change to DCC--
Mike