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Author Topic: TMCC in Williams  (Read 2064 times)
train72

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« on: November 09, 2013, 05:53:00 PM »

Hello: I am changing my Williams Trainmaster engines to TMCC and want to know where do I connect the wire to the horn board to activate the horn from the TMCC
board ?
Thanks, Randy
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GG1onFordsDTandI
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« Reply #1 on: November 09, 2013, 06:19:53 PM »

I would think it depends on exactly which board, and if it was made for air whistle/ vibrating horn, or to trigger TMCC soundboards. Soundboards sometimes have a small speaker icon. A soundboard, or soundboard controller could be used to trigger mechanical sounds(horn/whistle/bell) with an opto isolator setup.   
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train72

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« Reply #2 on: November 09, 2013, 06:56:13 PM »

They are the boards I took out when changing over to TMCC, so they are Williams horn boards.
Literature from Electric Railroad shows how to hook up Lionel boards, but not Williams
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GG1onFordsDTandI
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« Reply #3 on: November 09, 2013, 10:18:54 PM »

Ah step one of the puzzle, I believe that horn board is activated by a 1.5 dc offset along a conventional ac line, and it needs about 3-7volts a.c. minimum constantly to operate.
You now need to also know how the new tmcc board would handle its normal horn board, or mechanical air sound. I believe tmcc used different boards for both styles of audio warning.
Sorry I don't have definite answers (patience someone might), but Im researching a bit for you. Following up on the info in the personal message I sent may yield more answers too.   
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