For my installation, once I had the ceiling light fixture dangling and the factory vent removed, I just fished wires over the ceiling but under the insulation. I didn't have far at all to go, which was a help. I just used a stiff wire to poke in one hole and out the other and then attached the wires in order to fish them through.
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2011 Sabre Silhouette 260BHS
2017 F-350 XLT CC DRW 6.7L
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