(Question )ERR Sound board Install in a Williams Locomotive:

GGG posted:

I am confused about what you did without a picture of the Williams board, but if you did what I think originally, you had the ERR Sound board connected to a motor take off on the Williams board which is probably what was causing erratic bell/horn.   That other port is a little unknown about what comes out of it.

Track power is available at the 2-pin port, it's there to support a sound board.

John, You need to go look at a Williams reverse unit, and reread his post.   Your not comprehending what happened.  HE did not just reverse leads to get it to work.  He had it plugged into the wrong port on the reverse board.  There are 2 2pin ports.  One is AC power for sound board, but he left the original Williams sound board plugged in.  That other port is not a AC pickup it is some sort of slave connection.  Hence why his ERR sound board was not working right. It was not on AC track power, it was on the wrong port.  G

Yep, I see that in his pictures now.  Apparently, both of the extra 2-pin connectors come from the motor drive, at least that's what my meter says.  The only one that has track power for the sound board is the bottom one next to the four pin connectors in his picture.

The odd part is, I'd swear at one point on those boards both connectors in line with the 4-pin ones came from track power, I may just be confused.

GGG,

Sorry for the delay, Hadn't seen your questions last time I looked'..

The top port is a power port.  The original lower port is not power, only a port that operates the original horn and bell installed by WIlliams'... At least that's how it is on this particular model'....  The horn stopped working completely, reason unknown.  The bell still worked.  That's when I decided to add the ERR sound system.  Additional research shows, others have had the horn not work under 10 VAC as well.  However, on this unit, the horn would not operate regardless of voltage'.... The system works fine.  I am considering re-wiring in series to slow it down a bit and activate sound under, 10VAC..

Thanks for your interest, I appreciate hearing your perspectives.... 

You can also add the YLB to keep the sound going when you throttle down.  For conventional operation, the battery also keeps the sound going for direction changes.