** Enter at your own Risk!!
{UNPLUG BATTERY Ground - wait 15+ mins., surf T4R.org}
The Seat Warmer Green Wire....
Ends at the IC4 connector as mentioned by others...
---> To add a female pin to the connector.
The IC4 connector consist of FOUR separate connectors, connected together.
IC4 needs to be unplugged, the specific connector unlocked, and removed from the cluster.
Once the connector is removed you can get to the lock on the connector to install the female pin.
{The blue, yellow, and gray connectors were removed to get to IC4}
Thanks to the T4R folks for the motivation..