Sorry, been busy the last month. There's a lot of parts of the GI and endocrine system to memorize.
I'll try to get the kits unpacked sometime this weekend. Don't want to sell more than I have available.
For the individual unfinished kits, I was figuring 50 + $8 shipping.
Instructions wise, Here's the basic set. See attached pictures as well:
1. Solder input wires to input header points. Insert from the side with the the circuitry (see pics).
2. Install buttons into clear front panel. The buttons will be on the left side.
3. Install wires from buttons to header, with a common ground for the buttons. The header connection for the buttons is labeled 123 and GND. The top button, which I use for left movement in menus, is pin 1 on the header. It is equivalent to A3 on the arduino. The remaining pins are A4 and A5 respectively.
4. Solder button wires
5. Using 2-3 of the short nylon spacers and the screws/nuts to separate the boards, slide the display onto the header pins, and tighten the nuts to finger-tight, holding the display board firmly in place. Then solder the header pins to the board. Optionally, clip the extra header pins with a wire-cutter.
6. Test assembly, by applying power to the +12v line and the GND line. You can use any power supply 6-24 volts. I usually use a 11V model aircraft battery for convenience since they're next to my work-table, but a 9V smoke detector type battery is a good option as well. Test the buttons, and all functions. Note the orientation of the display.
7. Remove nuts and screws. Insert screws into clear face. Slide the 4 long nylon spacers onto the screws, then insert the screws into the display holes, slipping the remaining short spacers into the space between boards, ensuring the screw goes through the center. Add washers and nuts. You may want a little blue thread-lock here. If you plan on having lots of wet riding, you may also wish to put a little RTV under the screws' heads before tightening.
8. Measure and cut/drill the hole for the cord grip on one of the sides of the box. Place the nut in the box, and trace the hole before cutting. The fit is tight, and you may need to slot the top of the nut to fit the front piece on at the end. Insert and tighten.
9. Heat-shrink the wires starting a couple inches from the board. Run them through the cord grip, leaving a little slack to install the cover. Tighten the cord grip nut (outside part) to seal the passage.
10. Use screws included in enclosure to close. The pictures attached are the one I had on my bike. There is an extra blue wire leading to one of the breakouts for the atmega chip. This was for a wideband O2 sensor I had set up.
Here's some more info on the backbone of the system.
http://ecomodder.com/wiki/index.php/MPGuino