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Old 11-19-2009, 08:16 PM   #9
sailed2japan
Jonny
 
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Join Date: Apr 2008
Location: Outside the Box, Austin,TX
Posts: 741
Re: 4 headlight rewiring?

I like simple and would wire the low beams directly to an ignition switched power source. This would give you day time running lights and Low/High joint operation.

The diagram above works also, although it is not very precise. the idea is to take the switching power going into the high beam and bring it over to the low beam relay to activate it at the same time. The reason for the diode is so that power doesn't flow from the low beam to the high beam. This would cause you high beams to come on with your low beams.
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