No resistor required other than for tuning flash frequency.
DCCconcepts - LED T1 Type Dual Colour 6x 3mm (w/resistors) Red/Yellow
DCCconcepts - LED T1 Type 6x 3mm (w/Resistors) Yellow
DCCconcepts - LED-RDD Red 1.8mm Panel Dot Type LED w/Resistors (6)
DCCconcepts - LED Tower Type 6x 2mm (w/resistors) Red
DCCconcepts - LED Flat Front Type 6x 3mm (w/Resistors) Signal Amber
DCCconcepts - LED Tower Type 6x 2mm (w/resistors) Prototype White
