Trains.com

Williams U-33 wiring

1540 views
3 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    September 2007
  • 1 posts
Williams U-33 wiring
Posted by JimDennis on Thursday, January 16, 2014 1:59 PM

Have used U-33 that has a bad old style factory E-unit that has gone bad. Wish to install new model Universal E-unit. Does anybody have an appropriate wiring diagram?

  • Member since
    December 2005
  • From: Hopewell, NY
  • 3,215 posts
Posted by ADCX Rob on Thursday, January 16, 2014 10:49 PM

Rob

  • Member since
    December 2001
  • From: Austin, TX
  • 10,096 posts
Posted by lionelsoni on Friday, January 17, 2014 9:28 AM

I don't know what outputs the proposed E-unit provides; but you can wire directional LED headlights in a simple way from the motor voltage:  Connect the two LEDs in anti-parallel, that is, connect each cathode to the other LED's anode.  Connect the ballast resistor in series with the anti-parallel LED circuit.  Connect the entire series circuit to the motor voltage.  No other diodes or resistors are needed.  Only one LED will light, depending on the motor-voltage polarity.

Bob Nelson

  • Member since
    December 2005
  • From: Hopewell, NY
  • 3,215 posts
Posted by ADCX Rob on Saturday, January 18, 2014 6:13 PM

 

Rob

Join our Community!

Our community is FREE to join. To participate you must either login or register for an account.

Search the Community

FREE EMAIL NEWSLETTER

Get the Classic Toy Trains newsletter delivered to your inbox twice a month