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For the guys who have done a retrofit, what is the polarity of our OEM bulb connector? I'm having a harness made and the guy needs to know.
 

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if u hold the socket with the vertical inlet, top horzontial inlet, vertical inlet. it goes high neg, ^low neg, pos. our trucks use a neg. switch system and the 05+ use a pos switch, where the high and low are pos and one solid neg.
 
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