After much pain I think I figured it out.



#1 is the connector that connects to the heating element of the steering wheel
#2, red and brown wires, provide power to #1
#3 provide power to #2
#4 is the connector that goes into #3

#4 connector consists of 2 wires. Brown and green/black. It provides power. However I'm not sure why power wires is green and black and not red.

Now I spliced into the green wire with 12 volts on remote start of the car. If my theory is correct, it should work.

But I'm thinking I must've overlooked something.