ws602transam

i have a 2000 T/A and my instrument/guage lights arent working. the 5A fuse was blown so i replaced it and then as soon and i turned the lights on it blew again. so i am guessing i have a dead short somewhere but how am i supposed to find it? is there somewhere where i need to start? also the odometer is still working and clicking off miles. and all the warning lights like the no seat belt, brake, all those lights still come on when i turn the key on but the lights that go to the spedometer and the tachometer, fuel gauge, alt,bat,temp gauge dont work.

thanks for any input!!!