well i finally got around to it. It looks like a hack job, but it works so far....
I basically did what the canadian guy did.. Well almost since he never posted pictures of what it looks like.
DIY of pictures and description....
here i planned it out with the wiring using paint haha ghetto but it works for me. I didn't use some of the stuff i was planning to use...
so how do I fit this in here...and use the orignal mazda battery location
well... cut it in half like the canadian guy then shave parts of the casing. THEN resolder the battery terminal backwards and bend it so it touches the battery. Don't forget to put some type of covering under that positive terminal so it doesn't touches anything else under it. ( I just covered the bottom of the terminal with hot glue.)
now for the wiring from my ghetto diagram:
stick them in all the holes of the board.. and solder them all down
Now you route the wires according to where all the mazda buttons are located. I'll probably superglue the wires down so it doesn't move.
You then now test out all your connections by putting it in the mazda casing that you modded and touch the wires together one at a time to make sure they all work. GREAT! it all works!
oh yeah as for the chip in the key.. put it where the mazda chip is located.. at the head of the key. First peel off the mazda logo, then unscrew the screw to open the head. You will then see the chip. It's super glued in there so you have to probably dremel it out. careful to not crack the casing.
Kidfuzion mentioned how to wire the original mazda buttons so I decided to try it out.. and it works!! All I have left to do is to take the key to a locksmith to cut..
you solder one wire on the upper prong of the button and on the other side the lower prong. I superglued the buttons down to the board afterwards.
I want to thank everybody for the tips and suggestions!
I improved the reception by using the antenna from the OEM remote. I had to peel it off and scrape off the top layer to expose the metal in order to solder it on.