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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Under bed light?

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Old Dec 27, 2020 | 06:13 PM
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Under bed light?

So I’m gonna explain this the best I can and hope for good answers. I was wiring in a 3rd brake light the other day and caught a glimpse of something strange in the left corner closest to the back of the bed. It’s a light of some sort with a glass cover and it has a place to plug into the actual bed harness but I couldn’t get it to work, even after adding a new wire split to the same area. Does anyone know what this could be for and if it was a dealer or factory option??
 
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Old Dec 27, 2020 | 08:10 PM
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I am pretty familiar with the wiring diagram for these trucks, and so far I have never seen a option for a light at the rear of the bed. Not sure what would even activate it.
 
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Old Dec 27, 2020 | 08:13 PM
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License Plate Light.

Hobo
 
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Old Dec 27, 2020 | 08:42 PM
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If it was a flare side I would say it could be a plate light on whet is left of the plate bracket.
A picture might help us
Dave ----
 
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Old Dec 27, 2020 | 10:10 PM
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Well she’s an 81 f350 if that helps any. And it’s set too far back and right under the bed plate on one of the crossmembers/braces. It’s very strange and the weirdest part is that both the glass cover and plate have ford stamps on them

I can post a pic in the morning of where it’s located but sadly a cousin got to the glass when I wasn’t looking and broke it.
 
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Old Dec 28, 2020 | 09:59 AM
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Rear bumpers were an option so it is not uncommon to find the harness and sometimes the lamp in the location you are looking at.
probably yours recieved a bumper or step bumper upgrade at the dealership
 
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Old Dec 28, 2020 | 11:12 AM
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LP light, and there should be a bracket for the plate as well. My 84 F250 has it.
 
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