Synchronize flash

Hi,
I’m looking for how to synchronize the flashing of several rpm display LEDs?
I set the same flashing time but each LED has a difference of 400 rpm and therefore my red LEDs flash randomly
Thank you for your help

Unfortunately I don’t fully understand what you mean. To my opinion, easiest way to create shift lights is using Indicator Cluster Gauge. See this post for quick instructions:

How do I create shift led lights - General - RealDash Forum

OK thanks
I try this