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No lights/gauges

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Old May 8, 2015 | 04:48 PM
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No lights/gauges

Sometimes I have no signal or brake lights and the gauges on the instrument cluster do not work. I have discovered that if I shut the motor off and restart the lights will then work but not everytime. Sometimes I have to start the truck 3-6 times before everything works. I am thinking this is an ignition switch problem. Any other possibilities?

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Old May 8, 2015 | 05:33 PM
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Start by checking the fuses then move to the dimmer switch..

When mine went bad it shut every light in my truck off running about 50mph one night
 
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Old May 8, 2015 | 09:16 PM
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The lights should be on constant power; the ignition switch shouldn't be in the picture there. I'd check your fusible links up under the hood near the starter solenoid, as well as the battery cables (esp. ground).
 
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Old May 8, 2015 | 09:39 PM
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I always have headlights, taillights and instrument lights. If I just turn on the ignition the signal lights and gauges work but when I switch the key further to start the truck that is when the signal lights, brake light and gauges often do not work. This is why I am thinking the ignition switch is bad.


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Old May 8, 2015 | 09:46 PM
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That sounds like it could be a ignition tumbler problem.. Can you crank the truck and slightly roll the key back and make the lights work?
 
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Old May 8, 2015 | 09:58 PM
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Yes that works. What needs replacement?


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Old May 8, 2015 | 10:03 PM
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Ah, OK, I misunderstood what wasn't working ... brake lights confuse me though, as those should (like headlights) have constant power. Turn signals and gauges though, does sound like an ignition switch issue if they're not working in "run" ... if they're just not working while cranking, that's normal.

If there's an issue in "run" then I'm not sure why the engine wouldn't also die though; trying to remember how many terminals are on the back of that thing. Wonder if it could be an issue with the wiring at the switch rather than the switch itself.
 
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Old May 9, 2015 | 12:11 AM
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Its likely the connection in the tumbler not reconnecting "ACC ON" when you let off of "crank".. Replace the entire tumbler.. should cost around 10 bucks
 
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Old May 11, 2015 | 09:46 AM
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I replaced the tumbler ($8.95) and all is now well!

At the parts store the guy was a little pushy about contacting someone he recommended to have them change the door locks to match the new tumbler ($20 or so...). I asked why I didn't just swap the pins from the old ignition tumbler to the new one. He said, "because the old pins are worn" I said "so is the key". Decided to just walk away at that point, before I installed the new tumbler I swapped the pins...

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