My 1989 Honda Accord LX's alternator is seized. The car fires right up with a fresh battery but the alternator does not spin while the car is running. What can I do for this problem? Also I need to replace the freeze plug how hard of a job will this be and what are your recommendations? Also I was wondering what it takes to remove the stock head unit and put in an aftermarket head unit?

If there are any links to another page that will give me tutorials or something helpful please tell me thanks.

Thanks For Your Time