Correct me if I'm wrong but if you're wanting to put the LEDs into the triggers why do you need a resistor, it's no different from putting a blue LED anywhere else it's just you put them into the triggers, take the PSP apart, drill a little hole in each trigger, place the LEDs in, make sure they work, put PSP back together. There's also a tutorial for that hanging around here somewhere, most likely the tutorials section. The only time you're going to need a 191k resistor is for the sound reactive mod and even then you need a 30k resistor too (30k? that could be wrong but I'm going from memory from when I've seen it before, as I've not done it myself)