E46Fanatics - View Single Post - HID Fog Light install: question about ground wire
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Old 01-17-2013, 01:43 AM   #11
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Join Date: Jan 2011
Location: Tallinn
Posts: 82
My Ride: 2001 330ci
The instrument cluster flick happens because of a bad connection in one of the connectors (possibly connector not correctly seated or oxidized. Could also be on the other end of the factory harness (oxidized OEM ground)). In theory, the factory harness has enough wire thickness to deliver the needed amount of current to start up the hids correctly. I have managed to get all the hid kits working with the OEM harness (I've installed them on about 5 different E46) by cleaning the OEM connector and ensuring that it is seated properly.

But if you got it working with a separate ground its all good
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