2001 V6 Mustang headlight issue - Ford Mustang Forum
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post #1 of 2 (permalink) Old 03-26-2011 Thread Starter
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davejen03's Avatar
Joined: Mar 2011
Location: Newport News
Posts: 2
2001 V6 Mustang headlight issue

I am currently having an issue with the headlight switch. When I pull the light knob on it will only turn the headlights on. I just replaced the switch yesterday. Anyone have an idea of what it could be.. It worked fine until I replaced the factory stereo. It blew a fuse so i replaced it and now it wont work properly..

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post #2 of 2 (permalink) Old 03-26-2011
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Joined: Sep 2010
Location: Houston
Posts: 6,849
First CONFIRM fuse F1.10 (30a) is good.

Test the TN/WH wire on the head light switch. Should have +12 volts at all times. If not, fuse F1.10 is blown or there is a wiring harness problem.

F1=BJB=Battery Junction Box-located engine bay
F2=CJB=Central Junction Box-located driver's kick panel.

There is a ground behind the center console. It is shared with the radio and several other devices (cluster, GEM, blower motor). Confirm that all grounded black wires were re-attached after the radio install.

Note to self: Many circuits in today's cars are on "always on" circuits. Remember to disconnect the battery negative when performing electrical work. Could save a ton of time.

2003 GT Convertible (sold & missed)
2000 GT coupe (Craigslist project. Fixed. Now my DD). Windsor to Romeo swap.
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