High Performance: High Beam Indicator Non-Illumination Kit H4Hi/Lo; High Performance High Beam Indicator Non-Illumination Kit for H4Hi/Lo Switching; Product Description: When H4Hi/Lo is equipped with negative control vehicles (Toyota, Daihatsu car or Mazda vehicles), the high beam indicator lamp may not turn on when turned on a high beam. The indicator will light up when the product is installed.