How to install an Electronic Model Railroad Reversing Unit in Williams loco?

Hello what you haxe there is a QSI ACRU-E. It is meant as a direct replacement for E units in Lionel AC steam engines such as 2025, 2026. 736 etc. The hookup is as follows: Orange to pickup roller, Brown to outside rail ground, Green to the field winding, and Yellow & Blue to the motor brushes, The advantage to these is they always start Neutral before forward after off for 5 seconds. They also ignore minor power drops as engine travels on the layout. They even have a notch that matches the profile of the mechanical E unit. This particular reverse unit only works with A.C. motors not D.C. motors found in Williams engines.

@Mark Wags posted:

...advantage to these is they always start Neutral before forward after off for 5 seconds...

Or neutral before reverse after off for 5 seconds... it depends on the connections to the brushes - swap them them if it starts the wrong way.

Hi Rob. Would you be able send me a one of your hand drawn diagrams on how to connect a Lionel Post War #91 Circuit Breaker please? I'm not exactly sure how it works or how to connect it. Thank you.

Hi Rob. Would you be able send me a one of your hand drawn diagrams on how to connect a Lionel Post War #91 Circuit Breaker please?

Thanks very much Rob. I appreciate it.

I'm testing a pre war Lionel #91 circuit breaker. I wired it per your diagram. It's so old and sensitive, it trips after running a train for a few seconds on 4 separate tracks. I thought it was connected incorrectly, but it is correct.

Odd, I use the #91 on my workbench to protect equipment I'm working on in case there is a high current issue.  It's been great for an instant trip when there is any excessive current draw, but I can run stuff drawing less than a couple of amps on the LOW connection for as long as I like.

@gunrunnerjohn posted:

Odd, I use the #91 on my workbench

Prewar or postwar 91?

I use the prewar one, I had one of the post-war ones, but I found it was much more cheaply made and also the adjustment was somewhat "flaky", at least IMO.