Licence plate neon

Went to install a neon for the licence plate (98 crapfire) but when I wanted to know which wire was pos and neg well I guess I bridge the wires or somethin' VERY BAD. Now the licence plate lights heater/blower A/C and apparently rear defogger don't work. All fuses are okay. Is it a circuit breaker? fuseable link? summer is a comming and it is getting mighty hot!

Probably a fusible link...but that should've just blown a regular fuse. Go through them again and look very closely or just replace the appropriate fuse anyways.

And remember, the one with the stripe is the ground, usually.