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How to take the brake light switch out? 200

posted by  86Volvo245 on  Mon May 5 14:23 CST 2008
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last visit: Wed Feb 24 05:03 CST 2010
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Recently, the three brake lights out order in the same time. And one BBer sent me very detail diagnose instruction.

Here is what I learned from the instruction:

fuse 7 provide 12 V to the brake light switch, brake light switch connect to Bulb Fault Sensor terminal 9, BFS terminal 9 connect terminal 10 and 11 , terminall 10 and 11 connect the tailgate brake lights.

Since three brake lights all stop work, I should check three things:

1: fuse 7
2:brake switch switch broken.
3:BFS fail

First, I check the fuse 7, it is ok.
The BFS is ok too. See the pic below. The first owner have alraedy by-pass the BFS by connected termiall 9,10,11 directly.


Photobucket

So, the only remaining one is the brake light switch.

After I loosen the two 12 mm nuts(circled number 2), it still there. So, I found it was tighten in the brake bracket . After several time try, I have no clue how to take it off.

Any one have experienced to take it out and replace it? How to take it out easily?

Thanks.

Photobucket

Photobucket








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    How to take the brake light switch out? 200

    posted by  TONY H on  Tue May 6 02:39 CST 2008
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    last visit: Fri Oct 17 16:39 CST 2014
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    Before taking teh Switch out, Check to make sure that you have 12 V to the Green Red wire at the switch. THEN check to see if you have 12V on the Blue Red wire at teh switch when stepping on the Brake. If you do not have 12V on the green wire...it's not the switch.
    --
    '75 Jeep CJ5 345Hp ChevyPwrd, two motorcycles, '85 Pickup: The '89 Volvo is the newest vehicle I own. it wasn't Volvos safety , it was Longevity that sold me http://home.no.net/ebrox/Tony's%20cars.htm








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    How to take the brake light switch out? 200

    posted by  transit wind on  Mon May 5 15:38 CST 2008
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    last visit: Fri Aug 15 22:40 CST 2014
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    It was a pain of a task as I remember it. On your bottom photo you have the switch circled. I had to buy a 11/16 stub open end/box wrench to get in there. You have to loosen two thin bolts on either side of the metal bracket. Not the two you also have circled under the steering wheel thing but on each side of the switch. I had to go at it from up through the pedal area I believe. I also had to remove the air duct which I never really could get back together again. But its a matter of a small turn and flipping the wrench to get another little turn. If I did it again I'd remove the front seat to get a better angle at it rather than nealing at the door. The first time I tightened the bolts with the new switch I didn't get it tight enough and my brake lights went on all night killing the battery.

    You can also test the switch by jumping the two wirers going to it. Touching them will turn on the brake lights. Good luck.







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