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Discussion Starter · #1 ·
1984 Ford Bronco. Driverside tail light (1157) is not working. Brake light works, blinker light works, and flashers work. But the the tail light? Tired new bulb, tried new socket, but still the same problem???
 

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Does power go to the socket when you turn on the running/headlights?
 

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Discussion Starter · #3 ·
Does power go to the socket when you turn on the running/headlights?
I put a test light in the socket and there's no power with just the running light/tail lights are on
 

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There's your problem, a failure somewhere in the running light circuit to that light.
I'm assuming the other three corners are working?
 

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Discussion Starter · #5 ·
There's your problem, a failure somewhere in the running light circuit to that light.
I'm assuming the other three corners are working?
yes all three others work fine, and now my tailgate power window isn't working ether
 

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Try taking the taillight housing off and check all of the grounds behind that light. If I recall, there are grounds there for the taillights, and the tailgate.

As for the tailgate, does it not work with the key switch, the dash switch, or both?
 

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Yo Jimmy,
Some of the Following is from 1984 Bronco EVTM, Emissions, Body/Chassis, Engine and Pre-Delivery Manuals @ Bronco provided by my friend Ryan McFarland,
Scroll down to "or continue to website" and click.

Suggest downloading all.
Product Rectangle Font Computer Operating system

Rectangle Slope Font Parallel Screenshot

Rectangle Font Screenshot Parallel Software

Product Rectangle Font Parallel Screenshot

Rectangle Font Line Parallel Auto part

Azure Rectangle Font Schematic Screenshot

Rectangle Font Software Screenshot Parallel

Product Rectangle Azure Font Line

Azure Rectangle Font Schematic Screenshot

Rectangle Line Font Parallel Engineering
 
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