Trains.com

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Sound & Light decoder wiring

1808 views
8 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    January 2014
  • From: Moneta, VA USA
  • 1,175 posts
Sound & Light decoder wiring
Posted by gdelmoro on Tuesday, January 23, 2018 12:44 PM

Is the FWD and REV pad on a decoder for the front and rear headlights AND any other lights on the front (ditch, classification) or rear (Marker)?

OR

Do other lights need to go to separate pads on the decoder.

Gary

  • Member since
    October 2006
  • From: Western, MA
  • 8,571 posts
Posted by richg1998 on Tuesday, January 23, 2018 1:41 PM

gdelmoro

Is the FWD and REV pad on a decoder for the front and rear headlights AND any other lights on the front (ditch, classification) or rear (Marker)?

OR

Do other lights need to go to separate pads on the decoder.

 

Well front and reverse are obvious. Other lights to other pads.

What decoder are you asking about?

All my decoders came with clear instructions.

Rich

If you ever fall over in public, pick yourself up and say “sorry it’s been a while since I inhabited a body.” And just walk away.

  • Member since
    December 2015
  • From: Shenandoah Valley
  • 9,094 posts
Posted by BigDaddy on Tuesday, January 23, 2018 1:56 PM

If those other lights are supposed to do something different from the headlight, as in flashing ditch lights or turn on/off separately, they need to go somewhere else. 

Henry

COB Potomac & Northern

Shenandoah Valley

  • Member since
    January 2014
  • From: Moneta, VA USA
  • 1,175 posts
Posted by gdelmoro on Wednesday, January 24, 2018 6:23 AM

richg1998

 

 
gdelmoro

Is the FWD and REV pad on a decoder for the front and rear headlights AND any other lights on the front (ditch, classification) or rear (Marker)?

OR

Do other lights need to go to separate pads on the decoder.

 

 

 

Well front and reverse are obvious. Other lights to other pads.

What decoder are you asking about?

All my decoders came with clear instructions.

Rich

 

TCS WOW AK-MB1

Gary

  • Member since
    May 2010
  • From: SE. WI.
  • 8,253 posts
Posted by mbinsewi on Wednesday, January 24, 2018 7:13 AM

Gary, have you checked out the TCS web site?  I know nothing about TCS, but just a quick search came up with this:

https://www.tcsdcc.com/Customer_Content/Installation_Pictures/HO_Scale/Atlas/RS-3%20Sound/Atlas%20RS-3%20_WOW121-Diesel%20and%20AK-MB1.html

Don't know if this helps you, but TCS should have more instructions for their decoders and boards.

Mike.

  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Wednesday, January 24, 2018 7:38 AM

DCC fundamentals time.

For lighting functions, the blue wire, or the common pad (some boards even label the pad BLUE since on a wired decoder the proper color code is blue), is the plus side of the circuit. Each function 'output' is actually the negative side of the circuit. Front lights are labeled FWD, FRONT, or WHT because on a wired decoder, the color code is white. Rear lights is something like REV, or YLW because on a wired decoder, the color code is yellow. Additional functions are often labeled F1, F2, etc. Color code on a wired decoder are purple (violet) and green. And that's the limit for a wired decoder, that's all the wires you cna have with 9 pins. But a board decoder (or even a wired one) can have more than 4 function outputs, so those end up being solder pads where you can attach your own wires.

Each function output can only do 1 thing. It can be steady on, it can flash, it can pulse, it can blink. But not at the same time. So if you want alternating ditch lights, each ditch light needs to be hookd up to its own function, AND that can't be the same one as the headlight because if you configured it to flash, the headlight would flash too. 

Pretty much every decoder instruction sheet shows you how to do ditch lights, on wired decoders they always have you hook the lights to the violet and green wires, and then they list the CVs you need to set to make them into alternating ditch lights. You aren;t required to use those specific functions, but it means the CVs you change would be different.

                             --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

  • Member since
    January 2014
  • From: Moneta, VA USA
  • 1,175 posts
Posted by gdelmoro on Wednesday, January 24, 2018 8:27 AM

Yes i checked he TCS site but didn’t find the information Randy provided. Thanks Randy that is very helpful.  I guess the instructions i received for the TCS didn’t have details about ditch lights. 

 

Gary

  • Member since
    April 2004
  • From: Ontario Canada
  • 3,574 posts
Posted by Mark R. on Wednesday, January 24, 2018 11:31 AM

¡ uʍop ǝpısdn sı ǝɹnʇɐuƃıs ʎɯ 'dlǝɥ

  • Member since
    January 2014
  • From: Moneta, VA USA
  • 1,175 posts
Posted by gdelmoro on Wednesday, January 24, 2018 1:09 PM

Thanks Mark, I’m brand new to decoder installations so I didn’t understand how the f1, 2, 3, 4 & 5 pads worked until randy explained.

Gary

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Users Online

There are no community member online

Search the Community

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Model Railroader Newsletter See all
Sign up for our FREE e-newsletter and get model railroad news in your inbox!