Buttons installed

All buttons and LEDs installed, now time to hook up arduino and test a sketch

Changing resistors

The dome buttons are lit by a LED set up for 12V DC.  Replaced resistors in each LED with a 100 ohm resistor so now can use 5 VDC (30mA per pin) - would be better if it were 20mA but had 100 ohm resistors and arduino can source up to 40 mA per output pin.

Test light and switch on Dome buttons

 First test the switch and LED on the dome buttons.  Ran simple Blink and Switch sketches on Arduino