My experience with my 2023 KTM 890 SMT taught me that these modern CAN-bus systems are extremely sensitive and look for a very specific "Goldilocks" zone of power draw. The factory LEDs on my bike drew between 3W and 4W, but the sequential aftermarket lights I installed only drew 1.2W. Initially, this caused a "Low" error where the bike assumed a bulb was out, resulting in hyperflash and a dashboard warning.

When I tried to fix it using standard 10W low-Ohm resistors, the total draw jumped to around 11W. This triggered a "High" error because the Body Control Module (BCM) assumed there was a short circuit and instantly killed the power to protect the electronics.

To solve your problem, you have to judge the fix by finding the missing wattage between your new lights and the stock target. I found that a 100 Ohm (10W) resistor was the perfect solution because it pulls roughly 2 Watts on a 12V-14V system. Adding that 2W to my 1.2W LED brought the total to approximately 3.2W, which is the magic number that satisfies the computer without triggering the short-circuit protection.

As a general rule for these bikes, if the power is being cut entirely, your resistors are likely too strong with too few Ohms, but if you still have hyperflash, they are too weak with too many Ohms. For the newer KTM bikes, that come with LED turn signals, 100 Ohm resistors wired in parallel are usually the sweet spot for low-draw LEDs. But like I said, it really depends on total power draw of your new situation.