help battery catches fire!

[eliminator024]

I removed the intake manifold and all of the wireing to seal a leek and i put my batery back in and hooked up and the positive cable catches fire down to the battery fuse and the jumper battery fuse catches fire, i tryed another fuse same thing happend did i put my wireing harness on wrong? And i also got a new alternator.
please help cant find any wireing diagrams new to 300zx

[silnv]

You have a major short somewhere.