Also available as an option when buying the Ultimate 64 Installation kit, this is the DUAL COLOR LED ILLUMINATED POWER BUTTON WITH WIRING HARNESS for your Gideon created Ultimate 64 computer.  If you don't already have the installation kit, you can buy it here and add this product to it all in a single purchase ( Ultimate 64 Installation Kit Link )

This product consists of a 3D (designed by COREi64.com) printed translucent power button that slips over the V1.2 main board power switch.  A two color (red and blue) LED is embedded into the back of this button, and attached to a wiring harness that plugs into the main board as shown in the supplied photos in the product pictures.

Obviously you'll need to have everything else that the button attaches to in order to make use of this... but if you're here, you already know that.

Wire colors in the harness will vary.

Installation is simple.  Center wire goes to the center pin.  The outer wires can be installed on either side.  This will simply change which color indicates power, and which indicates drive activity.  Try it either way and keep it the way it best suits you.