Brake Lights don't work now - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 09-15-2009
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Brake Lights don't work now

So I ended up having to get one of those adapters that plug between the tail light harness for trailer lights. Now when my lights are on or I hit the brakes the rear turn signals on my truck don't work. The front and trailer lights flash fast like my bulb is out. When I don't have lights on or braking then they work.

What's going on?
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Old 09-15-2009
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It sounds like you've lost chassis ground for the rear lamps. Double check the adapter, ensuring its properly connected/correct application for your truck. If you're still having problems remove the adapter and recheck the lamp operation. If they work, try a different adapter.
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