A few simple questions...

[Ramonesfreak2010]

First of all, I bought a parts car and swapped the 300zx brakes on all 4 wheels to my car. I heard that if you don't have a z32 BMC and you have all 4 z32 calipers, the brake pedal will feel spongy. The parts car had a BMC that was bigger than mine (The reservoir). I swapped it and bled the shit out of the brakes multiple times. The brake pedal will go all the way to the ground and it will barely stop the car. I have a pic of the BMC installed. Is it not the z32 BMC??? It says Sanyoooo on the back or something. lol
http://i144.photobucket.com/albums/r192/ramonesfreak2010/BMC2.jpg
http://i144.photobucket.com/albums/r192/ramonesfreak2010/BMC.jpg

Next, what is this???? There are blue, red, and black wires connected to it. Just wondering and do I need it???
http://i144.photobucket.com/albums/r192/ramonesfreak2010/Bay.jpg
http://i144.photobucket.com/albums/r192/ramonesfreak2010/Wires.jpg


Thank you.