GRJ, I did mine last year with your LED module regulators. They truly reduced the voltage drop on my double tracked overhead layout. I have four Superliners and six other Amtak passenger cars. Also, I just installed four analog lights from those passenger cars in a Burger King model I'm working on for the table layout.
Hopefully, you can see that these modules can be adjusted for intensity. The second pic may show this variation better.
The very far from finished Burger doodle, lit with those leftover Amtrak passenger car lights.
Jerry