My car was running fine until i decided to change my battery due to smelling like rotten eggs, i also found out that i have to change my alternator, when i put the new battery in fuse blew causing my car not to turn on i can get it to crank but not turn over.

this is what i've done so far i supplied power to main relay with test leads and got continuity on all the pins that needed to be tested from a walk thru that i seen here. my relay is good
i disconnected main relay and the fuse does not blow, i also jumped terminal 1 to 7 to check fuel pump and turned on,
I know i have a short and have no idea were to start looking any feed back would help ive researced and no luck

 

I can't help but wonder what kind of car you have?

I once had a Desoto that exhibited the exact same symptoms as yours.

On my Desoto it was the rope rear main seal leaking on the generator causing a short.

 

I have a 97 civic lx automatic

 

You have a short, and the short is obviously past the main relay. Inspect the wiring running back to the pump.