I assume that like most things in life, there is more then one way to accomplish something.

If you would like to wire an Illuminated AV Switch to turn on when power is supplied (assuming "kill key removed"), I THINK I see a few ways of PROPERLY accomplishing that.
I would like for guidance/confirmation on those methods.

1) Wiring the AV Switch LED (I believe most TCSS illuminated switches are like this one: http://www.thecustomsabershop.com/16...itch-P903.aspx) to the battery leads (Skipping the Sound Board):
Either:
a) Calculate the resistor needed using (Vs-Vf)/If. The Switch is Vf=3.0V, If=20ma.
For the PC & CF boards, the suggested Battery is Vs=7.4V, and this calculates to a 220ohm 1/4W Resistor.
For a NB suggested Battery of Vs=3.7V, this calculates to a 35ohm 1/4W Resistor (Use a 36ohm 1/4W as next available 5% resistor size)
QUESTION, is this Correct?
b) Use a LuxDrive DynaOhm 20ma Variable resistor wired on the positive lead to the LED (TCSS: http://www.thecustomsabershop.com/20...stor-P847.aspx & Data Sheet: http://www.luxdrive.com/content/4006_DynaOhm.pdf).
For the PC & CF boards, the suggested Battery is Vs=7.4V, and this would work, as the Spec Sheet states for Current Regulation 2.6V+Vf is needed, and 7.4Vs > 5.6Vf+dynaohm.
For a NB suggested Battery of Vs=3.7V, this would not work, as 3.7Vs < 5.6Vf+dynaohm.
QUESTION, is this Correct?

2) For PC & CF Boards ONLY: Wiring the AV Switch LED (same as above) to the boards (for PC3.0 & CF7.0 at least, I am not sure of the pad for this is available on earlier models) using the pad dedicated to the "Power On Indicator" (NOT the Accent Pads):
a) The ONLY option is to Calculate the resistor needed using (Vs-Vf)/If, as the Vs from the Board's Pads?
This calculates (3.3Vs - 3.0Vf) / 20ma = 15ohm 1/8W Resistor.
QUESTION: of page 27 of the PC3.0 manual (http://www.plecterlabs.com/Media/Doc....0-v1.0-GB.pdf) the Supply Voltage is given as 3.3V, BUT unlike the Accent Pads, no MAX MA is stated. Is there a MAX MA output on that pad? (Same question for page 35 of the CF7 manual http://www.plecterlabs.com/Media/Doc...V7-v1.0-GB.pdf).
b) CANNOT use a LuxDrive DynaOhm 20ma Variable resistor, as for Current Regulation, 2.6V+Vf is needed, and this would not work, as 3.3Vs < 5.6Vf+dynaohm.
QUESTION, is this Correct?

3) For PC & CF Boards ONLY: Wiring the AV Switch LED (same as above) to the boards (for PC3.0 & CF7.0 & CF6.x at least, I am not sure of the pad for this is available on earlier models) using the one of the Accent Pads (NOT the pad dedicated to "Power On Indicator"):
a) The Manuals for both the PC3.0 & CF7 (pages 14 & 16 respectively), suggest the "Calculate the resistor needed using (Vs-Vf)/If" method. In the manual's examples, the LED's use have a smaller "If" of 15ma, which is LESS then the MAX MA output of the pads at 18ma. SO, in that example, a resistor is required.
QUESTION: with the Accent pad output limited to 3.3V @ 18ma, is ANY resistor required for a LED with forward specs of 3.0V and 20am? If the pad CANNOT output more then 18ma (sounds like a current regulator to me), than the LED shouldn't be able to overdraw amps, and burn itself out?

I would appreciate feed back, as I'm still trying to learn about wiring and electronics for this hobby!

"Thanks" in advance.