Original Equipement Shorts

• Any factory device that uses electricity to operate could potentially be the source of the drain. Common drains include interior lights that fail to shut off when the doors or compartments are closed. Wiring in the electrical harness may also short to ground if the insulation is removed or broken.
  
  

Aftermarket Equipment

• Many different kinds of aftermarket equipment may be installed in a Corvette. Radar detectors that fail to shut off with the ignition key are a known draw on the battery. Stereo equipment, amplifiers, equalizers and active crossovers for speakers may also be a drain on the battery if not wired into a circuit controlled by the ignition switch.
  
  

Internal Battery Issues

• The original battery and many replacement batteries are constructed from lead and acid. The lead plates may erode or crack with time and wear. An internal short may result from cracked or broken plates, resulting in a drain on the battery.