Such as the behavior of these LEDs, if placed in the series of the valve.
my 42-380 with led's i think it looks good.
Ronin61 -
Which type of LEDs did you use in your 42-380?
They are 4 led bulbs from pinball life direct replacement for 44 and 47 bayonet mount. Amber in color. I purchased single,triple, and quad led's to try in my Philco 645k, really lights up that dial.
I think I like those ambers better than the warm white ones I have.