As SitKnealBend stated it would be much easier to just switch the seat covers instead of trying to take the whole seat apart. A 13 to 18 Bighorn, SLT power seat has the same seat foam as the Tradesman/Express seat. There are videos on YouTube showing how to install the seat coverings and it's really pretty easy. As far as the wiring goes you will just need to run a fused positive 12v wire to the solid red wire in the driver's seat yellow connector. The solid black wire in the yellow seat connector is for the ground but the seat will usually work without adding that wire because the seat is grounded to the truck. One thing to note is the Bighorn/SLT seat will most likely have a grey connector next to the yellow connector your truck doesn't have a corresponding connector for. This is for other features you aren't using and not needed for the seat to work so you can just tuck it away.
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