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08-07-2007, 07:46 AM
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#1 |
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Registered User
Join Date: Jun 2007
Location: n.huntingdon pa
Posts: 25
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Head Lights On No Tail Lights
I Have A Tail Light And License Plate Light Problem. They Work Fine Except When The Head Lights Are On.all Other Lights Work Fine At All Times. The Headlight Switch Is New And So Is The Harness For The Rear. The Tail Lights And License Plate Light Work When The Parking Lights Are On. Could The Headlight Switch Be Wired Wrong?
Thanks Jim |
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08-07-2007, 09:09 AM
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#2 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Head Lights On No Tail Lights
do you have the ground wire installed from the box to the frame like the factory installed it?
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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08-08-2007, 07:21 AM
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#3 |
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Registered User
Join Date: Jun 2007
Location: n.huntingdon pa
Posts: 25
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Re: Head Lights On No Tail Lights
If All The Other Lights Work Could It Still Be The Ground?
Thanks Jim |
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08-08-2007, 08:46 AM
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#4 |
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Active Member
 
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Head Lights On No Tail Lights
Yep, it could still be a weak ground. Enough to let some lights work but not the others. Also, check your connections in the wiring harness to make sure they're not corroded or dirty. Check connections behind the housing to make sure they are clean, etc.
I'm in the process of going through something similar but it has to do with one of the brake lights. Bulb is good, have voltage with no load going to it, but if I step on the brakes with the bulb in it, it doesn't work?? My next step is to follow the cabling back to check all connections and grounds. |
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08-08-2007, 09:25 AM
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#5 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Head Lights On No Tail Lights
having a good positive ground connection from the box to the frame was important enough for general motors to install one for the lights to work properly when the truck came from the factory
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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08-08-2007, 10:20 AM
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#6 | |
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Registered User
Join Date: Sep 2005
Location: Smith Mountain Lake Virginia
Posts: 1,537
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Re: Head Lights On No Tail Lights
Quote:
__________________
"A cat will almost always blink when hit between the eyes with a ball peen hammer" (you don't always have to state the obvious) Wear your PPE! You can eat with false teeth but you can't see with a false eye. 1959 Studebaker Silverhawk 350/400 1972 C10 L6 3OTT 2005 F350 - Built - whew! |
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08-08-2007, 01:40 PM
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#7 | |
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Led Sled! Discs R 4 ME!
Join Date: Jan 2001
Location: Toms River, NJ, USA (Transplanted Hoosier)
Posts: 7,327
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Re: Head Lights On No Tail Lights
Quote:
It happened when I had my exhaust replaced. Apparently the old exhaust was making the ground. I put in new grounds from cab to frame and bed to frame. Problem solved. To test pull off a tailight lense and ground a wire to the frame or exhaust and to the housing. Make sure you have good connection. If lights come on you know its your problem. |
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08-09-2007, 06:53 AM
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#8 |
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Registered User
Join Date: Jun 2007
Location: n.huntingdon pa
Posts: 25
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Re: Head Lights On No Tail Lights
Thanks For All The Info. I Will Check The Grounds This Weekend.
Thanks Again |
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