Think I've got the explanation
Hi Jordan
Ok now that I see your harness think I can explain the difference. They changed the location of the rear tail light blackout switch from on side frame rail with a head light dimmer switch through the frame rail, to late version that had a toggle switch on the drivers side tail lights mounting.
Now that I've seen yours will try and take some photos of the three different rear harness versions on my trucks.
Cheers Phil
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