Is the Bluetooth reader from Ebay or from a shop? You might be very unlucky and got a faulty one as it seems like you might have short circuited the on board electronics systems but i could be wrong. Have you try to disconnect your battery and leave it for a good 10-15mins. This might reset your car. My zed did weird things when I installed some LED dome/map lights many years ago, electronics starts to play up (window can only go down but won't go back up, car will only unlock but wont lock when I press the key fob, electric seat wont even move, and all interior lights doesn't light up) I disconnected the battery, things reset for 5-10 minutes but went crazy again after. I ended up taking it to Nissan, they did a full electronic reset and everything is back to normal after that. Give it a go and see if you managed to start up your zed, then drive to a Nissan dealership and ask if the can reset it.
Edit: Mine's a UK zed, and I'm assuming your is import since you call it Fairlady?