buzzing MFI relay

hey, im new to this site but not new to cars. im active on the subaru, benz, and volvo forums ive work on the family fleet and im working on my sisters 01 galant es v6. the car blew a trans due to the usual wave spring issue, i swapped the trans out and it was all fine then i went to unlock the car with the factory and aftermarket key fobs and the mfi relay keeps buzzing when the lights go off, the car was fine before the swap. ive done a lot of searching and its a common issue but no real solution. what exactly caused this? does this have anything to do with the swap at all? i had the lights out and the bumper off for easier removal of the trans and the bumper is still off the car, does not having the fogs plugged in cause this? this issue is driving me nuts can some one throw me a bone? lighting wise the car is stock, the only aftermarket bits are the alarm and the stereo.

thanks in advance