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Old 01-06-2013, 07:44 PM   #47
rizwan1377
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Join Date: Nov 2010
Location: Rockland county, NY
Posts: 1,775
My Ride: 04 M56,LC 100,RX300
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Quote:
Originally Posted by Tchleung View Post
That's odd adding the relay doesn't solve your guys' issue considering all the factory wiring system and controls are merely actuating that relay now which doesn't take any power at all to do and the HIDS are on it's own power and ground source from the relay.

I would instead, supply a separate new ground wire for the relay instead of using the factory ground wire off the fog harness. Leave the factory fog harness ground alone and just use the positive side to trigger the relay. Also wire in a diode so there is no chance of back feeding. This way will ensure that only the positive lead of the factory fog harness is being used to power the relay and the diode should eliminate any odd back feeding messing with your lights.


EDIT: I just realized that some of the relay harnesses you can buy might have different relay circuitry types as there are a few variations of how you can wire a basic relay. I always make my own relay harnesses so I know what pin is going to what.

My both ballast have separate ground from the body instead of the factory ground. From the OEM foglight connector,I am only using 1 positive wire which triggers the relay.
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