S14 Zenki stereo issue

[S14Magician]

okay i posted this in the tech area as well but i really need some help here and i know not all of us read the tech postings so im going to put it here too. I installed a system into my s14 and now it wont start. Ive replaced the battery and the starter and ive checked all of the fuses. any help will be greatly appreciated because im totally lost here. I think i have it narrowed down to the deck because i had it out when i replaced the battery and the car started fine but now that the deck is back in there it wont start again. please help