Posted two years ago, obviously, things have not changed.

My vote for the worst design of a Lionel Fastrack Item

I gave up and modified mine.  I ran #30 wire down the back of the supports directly to the connection point underneath, now they work.  We're not the only folks that have had issues with these.  It's painfully predictable as the LED connections are just pressed into the posts and then there's a lot of hope involved.