Lights blinking i have a 98 honda civic the head lights blink in and out the dash lights will work everynow and then the battery wont hold a charge i changed the alternator what the hell do i do

Did you actually changed the battery if the battery is bad and you got a good alternator that alternator is gonna **** the power out of that bad battery.

Sounds like you may have bad battery make sure your battery is getting the charging voltage of 13,8 volts or higher check it with a volt meter and see if the alternator is working right I've gotten bad alternators one can never be to sure than elminate that problem and move onto the battery make sure its good. it should have 12.6 volts or higher after it has been fully charged or you think its charged . than last check your relays and your fuses make sure there all working good luck