So I recently changed the alternator and battery on my 1999 XJ8 and now the Radio, power seats, and alarm don’t work anymore. I have checked all of the fuses and they are all fine . Any help would be great thanks

 

You need to see if you have power to those fuses: I am guessing not, so go back and check the wiring to and from the battery and alternator. You left some wire unconnected. Also, grab a wiring diagram (up in the STICKIES), and see if a relay is involved.

Not those, then check the bulkhead wiring studs on the right side as it passes through from the battery to the fuses.

 

got it , it was some bad fuses that I missed thanks