Upgrading Power Seats

[lowderkg]

I have a 2003 Yukon SLT. The driver seat has partial power and passenger seat has none at all. Went on eBay and bought some dual power seats that came off a 2003 or 2004 Denali. The seats I purchased have full power with heat & lumbar support. The question is this. What harnesses or other equipment do I need to complete the upgrade, put in the 2003 Denali seats? It does not look like the connectors/harnesses under the 2003 seats will pair up with the Denali seats. Though the seats came with the door panel heat switches, GMC dealer says just a door panel, with the cutout for the switches, will cost over 600 per panel. That’s just too much money for heated seats. If there’s one who knows what harnesses I need to complete the upgrade for dual power seats, even without hooking up the heat, please let me know. Kevin