Blinker problem

[camarostripes96]

My 96 trans am if having problems with the blinkers. My fuse keeps blowing whenever i turn my blinker on, sometimes whenever i have my door open and change the fuse out , and with the door still open , turn the blinkers on and it will work fine, and whenever i shut my door , and turn the blinkers on it will pop and blow the fuse.....What the hell is going on here, and where do i start out i am out of ideas??????? HELP PLEASE??????

[camarostripes96]

ok well i went out there and messed with it , cant find no short, but i have found out whenever it blows the fuse, i put a new fuse in and turn the blinkers on and shut my door over and over and over and it doesnt blow a fuse, BUT whenever i put my car in reverse it blows the blinker fuse!!!! Now where do i start and what do i do???
This is pissing me off, and i have to get my car inspected in not to long as well

[camarostripes96]

um ok thats kinda confusing , but i took my tail lights off and whoever had the car before i did, the backup lights have never worked before, and i took the tail lights off and there isnt any bulbs at all in the reverse lights!!!