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I drive a 2010 versa s hatch auto non cvt trans. A few weeks ago I noticed my car when i have my head lights on it will not give full power in accelerating past 40mph, but when the headlights are off it will give full power. Now normally something like this would be cause to a faulty brake switch. That has been replaced and still the issue occurs, now i work for nissan as a tech and theres nothing in our service manuals or recalls that have to deal with this, now im curious if anyone else has had a similar issue and if so how did you fix it?
I had the same problem. Two things I found. Left rear tail light harness was all chewed up and shorted. Also, this is a good one. The tail light bulb that was installed by the owner was an old 1156 single post lamp basically shorting out every time the lights were on and brakes applied. Changed the bulb to the proper P21/5v and all was good. Repaired the harness for good measure I have also seen one of the bulb filaments burn off and ground itself. Could cause the same issue.

Hope this helps
 
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