Oh Lord, Jordan, take that to a dealer to check if everything is going okay or back to your installer and have them confirm. I posted the installation pictures on here a bunch of weeks ago and don't feel there is any reason a CEL should be on after installing one (at least no light came on after my installation). I also don't have a light come on when the car is plugged in though it might be nice if it did (I ended up putting a 16-oz plastic tumbler over the shift lever which reminds me not to shift the lever until I remove the tumbler which reads "Block Engine Heater" on it and this prevents me from driving away while still being plugged into the wall).

Make sure that the wiring for the Heater is wound per the instructions and all wiring looms used properly as this should prevent any issues. Don't know about the speakers popping though but I've never heard anything like that. Keep us posted.

--> Averaged 685 miles/week and 49.0 mpg in first year (35.7k miles from Aug 7, 2006 to Aug 7, 2007)