hi i had my plugs changed, and since then it was hard starting, engine light is on and occaisionally (3 times now) my hold light was on and flashing...it takes quite a few tries to start it , its turning over but not starting...now i can hear the battery draining and it wont start at all...help

Why did you have the plugs changed in the first place? Was is just planned maintenance, or was there already a problem you wished new plugs could solve?...and how long was the time between the plug change and the presnet condition ?

did you get your coil wires switched up?