I changed the speedometer on my 96 bronco and now there's a beeping coming from under the dash and my alternator wont work

Are all the components of the dash properly plugged in? Are all harnesses snapped all the way in place? Could anything else under there have come unplugged/or loose while you where working under the dash? Could something have shorted out while you were under dash causing a blown fuse or two?

I checked all the fuses and there good im going to pull it apart again and put the old speedo back in and see if it fixes it

I figured it out . The speedo cluster has to be 96 only they changed mother boards in 95 and 97