I was wondering if the LED polarity for the E-lator could be added to the layout image. Looking at another build on the forum, assuming that in those images, the red wire is positive and the black is negative, when looking at the component side of the board, with the tube socket on the right, the left-most LED connection would be positive? I know that I can measure the voltage with a multimeter, but it seems that it might be easier for folks if the PCB or the layout specified.
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The positive (anode) of the LED goes to the cathode of D4, the negative of the LED (cathode) goes to R1 (330 Ohm).