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Left head light won't burn. Right one work both high & low. Used new bulb and checked ground, Still won't work. Then the right light got so hot that it melted the contacts on the bulb. Melted some of the plastic housing. What went wrong.
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Its possible that if the lights aren't factory installed, the wiring might have been done improperly. Aftermarket installations sometimes bypass important safety features, like fuses or relays, that would normally protect against this kind of overheating. To check if your lights are factory installed, you can look for certain indicators. Factory installed lights generally have wiring that is neatly routed through the cart, with wires bundled together and running alongside the main harness. The lights should also be connected to a properly rated fuse within the main fuse block. Aftermarket installations might have wires that seem out of place or added on, with connections that don’t match the factory style.
To further diagnose the issue, I’d recommend closely inspecting the wiring on both headlights. Look for any signs of wear, fraying, or loose connections. Pay particular attention to where the wires connect to the battery and the switch, as these are common points where issues can arise. If you have access to a multimeter, you can use it to check for continuity in the wiring or verify that the correct voltage is reaching each headlight.
If you’re using standard incandescent bulbs, a common issue could be a wiring problem or a bad ground connection. Even though you’ve already checked the ground, it’s important to verify that the ground wire is not only connected but also free of corrosion and securely attached, and routed to the battery pack negative, not the frame, which is typically done through a voltage reducer. If the ground isn’t properly established, the current might flow unevenly causing one light to work improperly while the other overheats due to excessive current. If the lights are aftermarket or if you find that the wiring looks like it’s been modified, you may need to consider rewiring the headlights through a reducer and adding a properly rated fuse or relay.
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