were do i find the service connector for and 89 lude cause check engine light come after bout 30 minutes of driving and when u turn it off and u go start up it again it wont start and it startin to **** me off

 

its in the engine bay near the map sensor etc its a little yellow box kinda thing its actually a plug with a yellow boot over top, take the boot off, put a paperclip between the two terminals to link them together, done!