When I have one to look at, I think I can build my own cables.
According to MR. The PDI cable and connector that Lionel designed will require a very expensive piece of equipment to make one.
Then again you seem to be very inventive so maybe you can do it.
I agree that a propriatary cable can be frustrating, but they tend to be easier for the average user. Plug in here problem solved. As they learn more in model railroading they may realize how simple wiring can be, but still easy for beginners and younger crowds.
Also, the not correct lengths should be a non-issue. Most of us in this hobby (after a year or less) are used to doing simple wiring. I'm quite certain I read ont he forum you could cut the cable and easily add your own wire to get the proper length. I can't remember where that post is at the moment, but I thought i came from Jon/MR/or someone from Lionel.
