JUST GOT A REMOTE KEY OFF EBAY (HYQ1512A) FOR MY 1990 LS400, WHICH OF COURSE DOES NOT FIT MY CAR. I DON'T HAVE THE ORIGONAL REMOTE KEY BUT WOULD LIKE TO MAKE THIS ONE WORK. IS THERE A WAY TO SWITCH THE REMOTE PORTION OFF THE NEW KEY TO THE OLD ONE, SO I HAVE THE KEY THAT FITS THE CAR WITH THE NEW REMOTE PORTION ON IT? I ALSO CAN'T SEEM PROGRAM IT, I HAVE FOLLOWED THE INSTRUCTIONS ON THIS FORUM AND OTHERS.