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*gmachinz* · 12-20-2015, 12:18 PM

Yes...my harnesses do include the 4-HI option. I see about 20% increase in light output with mine as measured with the increase of output voltage in the area of 1-1.5V @ the bulbs themselves.

12-20-2015, 12:18 PM	#77
gmachinz Account Suspended Join Date: Jun 2011 Location: Des Moines, IA. Posts: 4,143	Re: HD relay conversion headlight harness available! Yes...my harnesses do include the 4-HI option. I see about 20% increase in light output with mine as measured with the increase of output voltage in the area of 1-1.5V @ the bulbs themselves.