Adding Leds onto M1 Gold Outputs

[AnotherOne]

I'm thinking of adding LEDs to the output modules on my M1 Gold, so I can have a visual indicator for testing rules.

If I get 12volt LEDs - looking at this one: 12 Volt Led Spec (PDF). Do I need to add a resistor in series with the LED?

 

[electriclight]

No, you will not need a series resistor. Just factor in 13 ma for each LED used into your V aux current budget.