Headlight bulb H4 upgrade
This is a discussion on Headlight bulb H4 upgrade within the Grom Gear and Accessories forums, part of the Honda Grom Garage category; Originally Posted by 200-POUND-RIDER
H4 80 Watt LED from Singapore/China ebay ...
installed & tested...results:
ABYSMAL FAILURE... flickered a few seconds, got bright, and burned ...
LED bulbs need DC current but Grom alternator puts out AC for the headlight.
Originally Posted by 200-POUND-RIDER
Hard Racing has LED kits with rectifier for Grom.
Other solutions also available, as the Gojin replacement rectifier with DC output for headlight.
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