here is a quick car setup for the Tatuus of A.C. (Assetto Corsa) which have 5 leds shiftlights adapted for 15 RPM leds (SRW-S1, SIM Race F1 or SLI-F1).
notes: a similar tuto for VDASH-EMU is available here:
https://www.eksimracing.org/forum/index.php?topic=3805.0Assetto Corsa Tatuus car have 5 leds shiftlights, after checking rpm on track for each led we got this result:
LED 1 = 5800 RPM
LED 2 = 5900
LED 3 = 6000
LED 4 = 6100
LED 5 = 6200
using
percentage method, for 15 rpm LED values are:
88,88,88,90,90,90,91,92,93,94,95,96,97,98,99
using
absolute method for 15 rpm LED values are:
5800,5800,5800,5900,5900,5900,6000,6000,6000,6100,6100,6100,6200,6200,6200
Check the screenshots below:


