I'm sorry I meant I wired the two in series to make it 24V.
It's lighting up a 3d printer and this PCB is on a custom bracket on the printhead (Extruder) and I don't have a bunch of space. I could add some type of current regulator but it'd have to be near the power supply. I did play w/ resistors but I'm still learning and not exactly sure what I'm doing but they were getting hot so I was clearly doing something wrong. I've been going through calculators and trying to understand what I"m doing and why it's having the effect it is but it's taking me some time. I am more of a hands on learner and really learn by doing and noting results to be honest. I did check the PCB again and this what I came up with (See attached pic). It's an 8x6 array of LEDS, the left 16 (left 2 rows) share the same ground and the right 16 share (right two rows) the same hot. THen the middle 16 are in series. Would this be a 3P? This is what I think it is but I'm not even remotely confident in that answer. Or perhaps S3P3 or 1S2P? The current draw @12Vdc is 130mA and forward voltage @12Vdc is 3.08V.
I'm also trying to find out how/why the 8.25ohm resistors work in this circuit, it just doesn't make sense to me.
Thanks again,
Dave