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Bob Johnson · 01-06-2015, 10:41 PM

If you look at the diodes near the red wire at the top you will see that the 6V is reversed compared to the 12V. That confirms that the polarities are different, 6V pos ground, 12V neg ground.

Bob

01-06-2015, 10:41 PM	#4
Bob Johnson Senior Member Join Date: May 2010 Location: California Posts: 1,012	Re: Installing LED stoplights? If you look at the diodes near the red wire at the top you will see that the 6V is reversed compared to the 12V. That confirms that the polarities are different, 6V pos ground, 12V neg ground. Bob