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Right Brake light won't work??

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Old May 17, 2017 | 02:18 AM
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Right Brake light won't work??

first of all thanks to any one who reads and replies to my question

my right brake light won't come changed the bulb twice made sure it was the right one, and there was a blown fuse so i changed that as well, but it will still not come on? running lights will come on however
thanks again!


1978 ford f150 ranger 4x4
 
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Old May 17, 2017 | 05:58 AM
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Originally Posted by EDorado
first of all thanks to any one who reads and replies to my question

my right brake light won't come changed the bulb twice made sure it was the right one, and there was a blown fuse so i changed that as well, but it will still not come on? running lights will come on however
thanks again!


1978 ford f150 ranger 4x4


I had a similar problem about a year ago and found the bulb fitting loosely in the socket and rusty and/or corroded grounds. I corrected those things and the problem went away. The grounds are very important to all kinds of lighting working correctly.


Dennis
 
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Old May 17, 2017 | 06:42 AM
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Without a doubt the of 2 of the best threads here for that problem.

https://www.ford-trucks.com/forums/1...ml#post1812190

https://www.ford-trucks.com/article/...rd_Pickup.html
 
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Old May 22, 2017 | 08:01 PM
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It could possibly be a turn signal switch because brake light power is routed thru the turn signal switch. And if the switch is bad it will not allow the brake light to function either left or right. That is because the turn signal switch cancels out brake light power when that side left or right is activated so you have flash mode then and not steady brake light
 
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Old May 22, 2017 | 08:41 PM
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Grounds have to be rust/corrosion free....and those 1157 bulbs ground through the two nubbies on the bulb.

Check the pigtail for loose wiring and the two **** on the bulb guzinta.
 
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