William's F7 AA units both powered.

Are they already setup to run rear to rear?  If so, since they're conventional, you just stick the two B-units between them.

If the stumbling point is getting them to run like above, then you have to swap the motor leads and if they have directional lighting, the light connections.

I have powered up several of my Williams dummies and run them in multiple. You have to reverse the wires to the motor on the trailing A unit so it will start in reverse. you can sequence them with either the direction button or the throttle handle. Just make sure you keep the power off for a solid second to make sure that both e-units toggle to the next position. If they get out of sync, just power down and wait about 10 seconds for the e-units to fully power down then they should resync.

Add a dpdt switch on it if you want the backwards unit to convert back and forth from  fwd starts to rev. starts.

Just a comment-I have found the Williams F7's to be very powerful and more then capable of pulling any train I throw at them.

Are you planning on running very long trains?

Don, your locos are F3 models, not F7. In Williams parlance, the difference is a lot greater than the prototype.

The Williams F7 is a direct descendant of the AMT F7 from around 1950 and has a sheet metal chassis.

The Williams F3 is a copy of the Lionel F3 and has a diecast chassis.

Both have the same motors, but the F3 has different flywheels to fit under the shell that is slightly lower than the F7.

Don Winslow posted:

Just a comment-I have found the Williams F7's to be very powerful and more then capable of pulling any train I throw at them.

Are you planning on running very long trains? 

Don Thanks, the typical  length of trains would be 5-15 passenger cars. And yes they are very powerfull I would be doing the A-B-B-A more for looks.

Thanks

Greg

Mike D posted:

I have powered up several of my Williams dummies and run them in multiple. You have to reverse the wires to the motor on the trailing A unit so it will start in reverse. you can sequence them with either the direction button or the throttle handle. Just make sure you keep the power off for a solid second to make sure that both e-units toggle to the next position. If they get out of sync, just power down and wait about 10 seconds for the e-units to fully power down then they should resync.

Mike

I changed my transformer to 80 W (I had 40 W) and put the F7 units A-A on the track today and they worked like they were supposed to. 

Thanks for your help in understanding how I might correct the situation.

Greg

gunrunnerjohn posted:

Are they already setup to run rear to rear?  If so, since they're conventional, you just stick the two B-units between them.

If the stumbling point is getting them to run like above, then you have to swap the motor leads and if they have directional lighting, the light connections.

Thanks, I set them up today with a better transformer and they worked as pictured as above.