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You should already have the plugs available.
When you remove the seat you will find a small hole in the carpet.
There will be a plug that is pre wired for your vehicle to have the power seat option.
You plug it in and all will be working like it should.
I had to buy the complete seat so not wanting to pay that much shipping I am having them ttake seat off of base, the power seat has power lumbar so I asked them to take out with base, this should just slip up in my seat after removing manual lumbar?
They are interchangeable
Also they all come off assembly line the same. Options can be added ect anytime. So they do not remove the plug on the manual seat models.
After doing a little research I found there are two major plugs that plug in under back of power seat, I checked my H3 out last night and it has one plugged in now under manual seat I felt under carpet but did not feel a second, you think it is under there somewhere? Also will I have to have anything done to computer by adding power seat?