Question about 2006 GMC Envoy

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What would cause headlights to go off & on?

My head lights keep turning on and off

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Has it got a relay swicth if so it maybe faulty or bad earth or live wire,also a fualty bulb. check all by bridgein accross the earth with another wire.
sooty

Posted on Nov 27, 2014

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Bad relay or bad switch

Posted on Nov 27, 2014

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My 2005 matrix keeps blowing 15amp rear running light fuse every time light get turned on all other lights work fine.whats causing this?


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to blow a 15 amp fuse indicates a dead short
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When my head lights comes on in my 1997 lincoln town car the radio do a constant scan, just keeps scanning i have changed the light switch


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----------------Lincoln Town Car Radio stereo wiring?

http://technoanswers.blogspot.in/2012/02/lincoln-town-car-radio-stereo-wiring.html
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----------This will help.Thanks.

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Installed driver side headlight worked, an hour later both main headlights went out, when I went to check lights noticed that there was another headlight behind a little chrome cover that was out, could...


reasons bulbs keep blowning.your head light bulbs is halogen bulbs.dont touch with bare hands.the oils on your hands will make them over heat and blow.so use clean gloves on your hands when replacing the head light bulbs.if all is good.check alternator out put.it could be overcharging causing too much current flow through electrical circuit blowing out bulbs.use a digital volt meter hook it battery with car running battery voltage should be 13.5 to 14.5 volts. if it is 15 to 16 volts too many volts.alternator is faulty.due to lock out features turn off radio before disconnecting battery cables so you wont lose radio playing code.

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Headlights 1991 nissan pathfinder


hammerhamcd
Your year Pathfinder, as mine, had a slew of bad head light switches. The headlight switches caused a slurry of intermediate nightmares for a lot of customers. Many complaints included:
1. My head lights sometimes turn off upon switching from low to high beams.
2. My lights turn completely off when I switch to high beams.
3. My lights flicker when I switch from high to low beams and vise verse.
4. My lights sometime wont turn on at all.
5. My lights go on and off on bumpy roads.
6. My lights sometimes come on by themselves.
All of these different but similar complaints contribute to the infamous head light switch. There has even been reports of continuous dead battery's due to the head light switch turning the lights on and off intermittently and eventually deadening the battery.
The light switch is relatively easy to replace. Simply remove the the two upper and lower steering column covers, disconnect the two wiring harness bulk head connectors, a couple screws and wallah.
Remember your safety and always dissconncet your your battey upon electrical repairs.
Just last week I bought a new head light switch for about $70.00. I would highly recommend buying a new head headlight switch and not buying a junkyard special. You will likely be buying another faulty switch.
Good luck!!!!
Triple H Outfitters







Oct 14, 2008 | 1991 Nissan Pathfinder

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