My stock 01 ITR deck stop working. all the lights still turn on with cluster. Theft light still blinks. Check the 7.5amp fuse hood and the 10amp under dash. I also check for loose connections. any other things i can check

 

Did you check the fuses with a meter or did they just "look" good?

 

If the "Theft light" still blinks the 7.5A back up fuse, [constant power] is still good, the problem is the radio acc. fuse or circuit, as mentioned meter the fuse, it may look good but can be defective rather then blown, or just install a new or known working one.

Please do not install a bigger then called for fuse. 94