Hey folks I’ll add my experience. I installed Yoshimura rear signals on my bike and ordered Amazon 4x 10w resistors. They failed to work on install so I did some homework. Using the attached readings from my multimeter 12.6v and 0.72amp draw from signal. I determined that the stock signal has about 17Ohms of resistance. So I wired 2 of the 10w 10 Ohm resistors in series to each other and then wired them in parallel to the LED signal so I’d have a 20w 20 Ohms per signal. The dash indicator flashes slowly, and no warning message now.