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I recently purchased a Williams Scale GG1 and I would like to convert it to command control,preferably TMCC. I have been looking at the Electric railroad company web site but I am confused on what is needed for the conversion. I don't care about sound as long as the horn works on the GG1. Any suggestions?

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In general when you convert to TMCC you lose the ability to trigger the horn or whistle the conventional engine came with but ERR did offer a board that had a terminal to trigger the horn. If that is no longer an option then you would have to buy a Railsounds board to give you the horn sound.

I agree Boxcar Bill is your best source.

 

Pete

If you use one of the ERR board, the DC Commander or the Cruise Commander, there is a 5V output from the board when the whistle is blown that will allow you to kludge a simple circuit to honk the horn using a 5V relay.

 

Basically, you power your conventional horn board from track power with a set of diode strings in each direction in series with one lead.  The relay shorts all but one of the diodes on one side of the string out to apply a DC bias to the track power and results in the horn being activated.

 

Since you don't have smoke on that unit, you can also wire a relay to the smoke output and use the smoke on/off to ring the bell using the same technique but shorting all but one of the other diode string.

 

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