C&O H-5 2-6-6-2 Articulated Painting

[ACL1504]

Nice job, Tom.   Long may it run!

Do you put the resistors in the Blue decoder wire as a standard practice?  I'm not aware of any electrical reason to put resistors on a particular side of an LED.

James,

Thank you, much appreciate the kind compliment. Yes, long may it run.

The blue wire in the decoder is the positive wire. Meaning this is the wire where the resistor is placed in line. I've seen LEDs with both red/black and red/green leads. The RED is always positive (+) and the Black or Green is always negative (-). I once wired the LED the opposite thinking the Blue was the common wire. It is but it is the COMMON POSITIVE wire.

Tom