Both Sides Consistently Don’t Light Up
• Both headlight fuses are blown. Double-check either by inspection or plugging in the halogen bulbs to see if they light up (if they do, the fuses are okay). Replace with 15 amp fuses if needed.
• The polarity is incorrect. Change the polarity and try all different settings until the lights turn on appropriately.
• If the fuses are okay and all polarity settings have been attempted but the problem remains, then there may be malfunctioning parts.