Zsto217
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What's needed for this, is there a wire kit?
head lights, duals to singles 85k20
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Strick
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There was a question about this in another thread. The radiator support is different from the quad & dual lights, along with wiring, headlight doors & parking lamp relocation.
Strickland
Strickland
TotalyHucked
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^What Strickland said, core support is different along with the whole front harness, grille and marker lights.
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Why switch to singles? Just a strong preference for the look?
As mentioned, swapping the core support seems like more effort than it’s worth.
As mentioned, swapping the core support seems like more effort than it’s worth.
Originalthor
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Here the difference in the headlights pockets on the rad support. Also the wiring is pretty simple and is a upgrade. Just run relays for the high and low beams. So your headlights switch is just a switch and the power for the bulbs is from a relay instead of going through the switch.
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You can reuse the original headlight harness. The hi/lo pigtails are the same, the pins just need moved around in the connector. The the pigtails for the high beam headlights just get left unused. Iirc, the turn signals fit and reach the location under the headlights too.
Zsto217
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So the pockets are to far off on the radiator support to use the bigger headlight doors then thanks
Last edited:
AyWoSch Motors
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Thats not exactly true about tye core support on all trucks. Some yes, mine no.
I recently swapped core supports on my 87 K20.
That truck was a factory single headlight, as was the core support I put in, but it was set up to run either. it had the bolt plates for the plastic parking lamps, and the holes for tye single light adjusters, but it had the round lower cutout, and the 4square holes for the adjuster screws for the smaller dual lights. I looked at it, and took some measurements, and its exactly the same as my 86 (dual headlight), core support. I was surprised.
I have a few other cores, that are all totally different though. Might depend on the year
I recently swapped core supports on my 87 K20.
That truck was a factory single headlight, as was the core support I put in, but it was set up to run either. it had the bolt plates for the plastic parking lamps, and the holes for tye single light adjusters, but it had the round lower cutout, and the 4square holes for the adjuster screws for the smaller dual lights. I looked at it, and took some measurements, and its exactly the same as my 86 (dual headlight), core support. I was surprised.
I have a few other cores, that are all totally different though. Might depend on the year
RanchWelder
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Right AyWoSch...
My 87' has quad headlights... 4x6 stacked and the core has provisions for both...
single and the stacked version...
My 87' has quad headlights... 4x6 stacked and the core has provisions for both...
single and the stacked version...
