2009 sierra 5.3 crank no start

Im having trouble on my 09 sierra i had help changing the alternator and a friend had placed a homemade ground strap from the charging stud on the back of the alternator to the body ground giving the hood pin 12v of power. With the engine then running the hood was shut and i believe the two ground crossing shorted something out but im not sure what or where to look. All my grounds are good it has a brand new battery i checked every fuse under the hood and in the cab i have full power upfront and in the cab but no power going to the FPCM (fuel pump control module) any help or tips would be greatly appreciated just want to get it running again