HELP PLEASE *the infamous security light*

[Dreamspawn]

Ok i was gonna put my 92 300zx non turbo up for winter and drive my stealth long story short i had to switch back to the z put the battary in and what do you know it wont start. I've tried unhook the box next to the ecu i've tried unlocking all the doors with the key i've tried pulling the fuses out that say security and theft still no luck any ideas.. it did this once before but i dont rember how i fixed it...

[xXxRocker5150]

Hey man, how ya' been, last time I talked to you, you still had a camaro and were trying to find a stealth;

I've had something similar happen to me on my z31; what it ended up being was a bad ignition wire (check the wiring diagrams in haynes manual if you can), but long story short I had to solder up a new wire from the ignition and run it out to the fuse box or something like that (it's been awhile... in fact about 5 years), but take a volt meter to your ignition wires and see if they're not giving any juice when you turn the key.