What are these light connectors?

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BigRed82

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Location
Massachusetts
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Joshua
Truck Year
1982
Truck Model
k2500
Engine Size
6.2L Diesel
I just recently acquired an 82 GMC Sierra k2500 with the 6.2L diesel. It is only equipped with the single headlights. Under the hood is two additional connectors for lights. Does anyone know what they are for? One is a three prong connector and the other a two prong connector. Could it have possibly been a dual headlight truck? There is nothing in the build sheet that would suggest it.
 

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PrairieDrifter

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Those are headlight plugs. Is there a headlight harness upgrade installed maybe?
 

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