Ok so I have a gsl-se that I've been having issues with. What controls the dimmer lights? Ive checked all fuses and still a no go when I turn on my lights. Dash lights are out, but my tailights are fine. Today I was driving and my buzzer goes off and stays on and my rpms start freaking out. The car has leaked some water on it before behind the dash as well. Is there a separate ecu that controls the cluster lights and rpms and buzzer? Coolant is not low nor is the oil. Thanks for any help

 

Check your alternator for proper output voltage; you could have a voltage regulator that is failing high. Left unfixed, that can fry expensive stuff.

Also check your grounding points for tightness and cleanliness.

 

When I first bought my FB it had a positive battery cable that was wayyyy too long and the AC compressor ate through it causing it to ground, and it caused my tach to freak out like that. So I would agree, bad ground or short circuit.