Troubles With My Set Up (Update with pics)

How is your LW transformer hooked to the track?

On the LW-125,  U goes to center rail and A goes to the outside rails.   Just theorizing that if yours is not this way could be why you get bell and no horn.    As was mentioned in your other thread, the LW has no bell button.

 LW-125 Information

The switches:

SS=Signal Sounds

RS=Railsounds

PGM=Program (TMCC ID programming)  make sure it's in the run position, which it seems to be since you can cycle the reverse board.

EscapeRocks posted:

How is your LW transformer hooked to the track?

On the LW-125,  U goes to center rail and A goes to the outside rails.   Just theorizing that if yours is not this way could be why you get bell and no horn.    As was mentioned in your other thread, the LW has no bell button.

 LW-125 Information

The switches:

SS=Signal Sounds

RS=Railsounds

PGM=Program (TMCC ID programming)  make sure it's in the run position, which it seems to be since you can cycle the reverse board.

Thanks.  Reversed the U-A connections as they were wrong.  Horn now works.  Bell is gone though.  Yes, there is no bell button but it was working that way.   Is it correct for the engine to reverse when the throttle is cycled?  

Yes, that is normal behavior.   In conventional mode, it operates as you did by design.

Forward-Neutral-Reverse-Neutral   repeat.

If you're moving forward and stop, and want to go forward again, wait a bit, then advance the throttle.  It should go forward again without going thru the cycle.

Horn/whistle and bell  are triggered by a DC volt offset on the AC power wave,(àc has + and - waves) making one wave shorter than the other. You reversed it from a tall - to tall + by switching wires. If you like the bell better, it's ok to switch back.

  You can make an external bell button setup with one or two 6a diodes and a button. Or using diodes with a button& toggle, or two buttons, it can do both.   If you use the search option here, there are lots of threads here, diagrams, part numbers, and on J&C Studios site too.

  The diodes can be set up so it won't have the voltage boost you get off the LW. That boost is for the old whistle motors in steam tenders, so the loco doesn't slow down when you blow the whistle. You won't need the boost or miss the small voltage drop from the diodes, that GG should be a stump puller at low volts as is.(it's just a math game on having a boost with diodes or not. You could set up for.a tiny boost or full 5v too, your throttle would just sit 5v higher for the same speed to configure a 5v boost. The diodes (6-8) would eat 5v ac till you blow the horn, removing some of them from the circuit.

You can add diode to get directional headlights too. But they should already be directional, my conventional version even has directional.(led or bulb? I never looked.) Could be the trailing lamp is not installed correctly. Wrong plug spot, or backwards leads is possible. Or a burnt transistor and someone just jumped it to the other. 

  One of those switches will also lock the travel into one direction, or neutral. It should be at one of the noses on the bottom. I think it's the prgm switch on tmcc, mine just says lock/unlock.