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Unread 05-13-2013, 07:24 PM   #1
Jefenhauser
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1980 CJ7 
 
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Brake light will not come on!

My brake light are not coming on when I press the brake pedal. I check the switch with a meter and it seemed to be working and the parking light come on and the blinkers work. My hazards don't work either. Anyone have an idea what to look for?

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Unread 05-13-2013, 07:46 PM   #2
SCSEAJAYSEVEN
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Fuse?
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Unread 05-13-2013, 07:48 PM   #3
Jefenhauser
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The fuse is good.
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Unread 05-13-2013, 07:48 PM   #4
Jefenhauser
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Oh I forgot its a 1980 CJ7
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Unread 05-13-2013, 08:07 PM   #5
james04si
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Could be the turn signal switch in the column. I know if the hazard button is stuck halfway in the front lights in the grill light up when you hit the brakes. I found that out when I failed inspection and tore the column apart only to figure out the hazard button was stuck halfway in.
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Unread 05-14-2013, 05:07 AM   #6
Jefenhauser
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The hazzards are not working either. When you push the button in you lose the turn signals but they start working again when you pull the hazzard button back out. This is very frustrating!
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Unread 05-14-2013, 05:39 AM   #7
thompsoj22
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id have to see the schematic for your year

but i had the identical problem, it is the turn signal switch and it is kind of a bear to change but cured the problem. bought it at the zone for $24. pull the wheel, the snap ring that is behind it is the fun part. it holds the steering lock plate, pull the column mount hrdwr and support bracket, the plastic cover for the signal switch harness, feed the wires out through the top and reverse it to install. that snap ring is a bear!. make sure you get the right switch for tilt or non tilt.
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Unread 05-15-2013, 06:35 AM   #8
Jefenhauser
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I have not been able to work on it yet but now the Blinker fuse keeps blowing so i'm gonna try to replace the switch and start tracing back to see if i can see where the problem lies. This morning I did find that the PO was running the electric fuel pump off the brake light fuse. I moved it from there but still have not found the issue.
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Unread 05-15-2013, 09:03 AM   #9
texasdave
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Flasher.
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Unread 05-15-2013, 04:12 PM   #10
WindKnot
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Quote:
Originally Posted by thompsoj22 View Post
but i had the identical problem, it is the turn signal switch and it is kind of a bear to change but cured the problem. bought it at the zone for $24. pull the wheel, the snap ring that is behind it is the fun part. it holds the steering lock plate, pull the column mount hrdwr and support bracket, the plastic cover for the signal switch harness, feed the wires out through the top and reverse it to install. that snap ring is a bear!. make sure you get the right switch for tilt or non tilt.
There's a special tool usually available for rent/free at the parts house to push the lock ring down making the ring easy to remove. If your signal doesn't "self cancel", now's the time to change that out too.
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Unread 05-15-2013, 04:35 PM   #11
james04si
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And if you have doubt you can always unplug the turn signal switch under the dash and plug in the new one before tearing down the column to test.
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Unread 05-15-2013, 04:53 PM   #12
thompsoj22
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now that is a good idea

Quote:
Originally Posted by james04si View Post
And if you have doubt you can always unplug the turn signal switch under the dash and plug in the new one before tearing down the column to test.
slaving the switch in to see favorable results prior to the teardown is smart
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Unread 05-15-2013, 04:56 PM   #13
thompsoj22
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be careful with the hazard wiper!

Quote:
Originally Posted by WindKnot View Post
There's a special tool usually available for rent/free at the parts house to push the lock ring down making the ring easy to remove. If your signal doesn't "self cancel", now's the time to change that out too.
i assumed the little contactor that clips into the signal switch comes with the new switch, "wrong". you have to reuse it so be gentle with it. two little contact arms, cant miss it.
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Unread 05-15-2013, 06:25 PM   #14
Jefenhauser
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I ordered the switch today. Thanks for the advice!
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Unread 05-17-2013, 11:07 AM   #15
Jefenhauser
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Well got it fixed! The PO had wired the radio through the hot wire going to brake light switch a
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