JWA Insulated Track Signal Driver

I'm not sure where the confusion is.  You need the accessory supply to share a common with the track supply or you'll never get the insulated rail to be recognized.  Without that connection, the board would have no power and thus not function.    If you just power the board but not connect to the outside track, the insulated track would have no continuity to recognize the train was in the block.

Notice that if you power the accessory with the accessory power supply but the board with the track power, you don't need that connection.  Then the accessory power supply and the track power supply can truly be totally isolated.

Thanks @gunrunnerjohn! The figure 3 you have there is different then the figure 3 that came with the board and the pdf that I down loaded from Hennings as it is shown in my post! This makes perfect sense now! Glad I wasn't just having a senior moment! This new figure 3 is what I was thinking it should be like! You might want to replace that graphic on the pdf and the printed instructions with the one you just posted.

Thanks again!

That figure that I posted was cut & pasted from the documentation that I print for these products.  The one you posted was from an earlier document where I obviously screwed up making the diagram and fixed it over a year ago.  Wiring it that way would clearly not work!   Sorry for the mix-up, I figured those packages were out of the supply chain by now.

No problem! Like I said the PDF on the website is wrong, not sure why if you fixed it a year ago? Knew something was up cause you're a very smart guy, I don't design, just repair LOL. Hopefully now it's all good for the next guy! This is why this forum is so great.

Darrell, Now I understand!  I'll talk to Bill at Hennings and get him to update that on the website!  That was my original documentation when I first produced this version, I sent him the new version, but it obviously never made it to the website.

Great John! My passenger car LED kits arrived today, so now I have two projects to work on when this 8 day hitch is done! Good times!

Keeps you off the streets!

Yep! Next on the list is a YLB for my Santa Fe Hudson.