Quad lights not working properly anymore

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plummrey

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NC
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christy
Truck Year
1984
Truck Model
c10
Engine Size
V8 5.0
When bought all four headlights worked properly (2 on low all 4 on hi beam).

I have added an old stock radio like an original (no radio or speakers in when I got it), same wire colors and all, speakers are regular (2 small dash and 2 ovals in the back). I put new side marker lights in and spliced them in the correct wires on the parking lights. I put in new license plate lights and that’s spliced correctly (attached is an example pic circled of where my back light harness was cut of so it doesn’t have the two plugs for license plate lights). Grounds are all cleaned up, new battery, new headlight pull switch, new correct bulbs, new cigarette lighter thing, new door pins for interior lights. New relays in the fuse panel, everything is stock to keep it close to original.
Before in my other post signal lights were wonky. But those are working now except my headlights it’s one one set on at a time. What else should I look at
 

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Scott91370

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I would guess dimmer switch.
 

plummrey

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I’ve replaced that twice
 

plummrey

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V8 5.0
Nevermind, the bottom clip on the cluster plug was broken off and bottom half of plug was out of the cluster which I believe is for the headlights
 

plummrey

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christy
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1984
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c10
Engine Size
V8 5.0
Also forgot to resplice wires when changing the front marker light sockets, ( I had cut the wrong ones first) after fixing that the back small lights in the housing come on in the back . So can finally put my bezel and redone dashboard on
 

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