how to power 2002 Envoy seats up outside of car

[medida]

Picked up a seat of seats from a 2002 GMC envoy form a salvage yard. Trying to figure how to power these up to check that the motors work. Here is the pic of the connector

 

[medida]

GMC Envoy connector seat wiring

Ok, went to the library
this is connector 15326931 C311

Pin A is Brown and DDM Class 2 Serial Data
Pin B is Orange and is Battery Pos
Pic C is Orange and is Battery Pos
Pin D Black and is Ground
Pin E is Black/White Seat Belt Switch Left
Pin F-K are not used

So expect that Pin B and C are tied to the +12 v on the battery and Pin D is ground. Do I need to tie Pin E to ground also? I'm wondering if the seat belt needs to be buckled in order for the seat to move (and expect that this is what this wire is doing....checking that the seat belt is being use
let me know