The contactor studs are color coded so matching the wires up there shouldn't be too had for you. I mounted the contactor on the firewall behind the coolant overflow bottle. I drilled two 3/4" holes on the fire wall above where the center console meets the firewall. One for the power and ground to the battery and the other for the winch control harness that I mounted next to the 12v socket.
I drilled holes along the driveshaft tunnel and zip tied the power wires up along the left side. The harness for the 12v accy plug has the orange and white wire with the female bullet plug for your winch control.
On the winch housing, the yellow wire will go to the front post and blue to the rear. Once wired, check the polarity using the winch switch. Free spool some cable out and use the pendant to roll cable in. If it rolls out, reverse the polarity at the winch by swapping the blue and yellow wires
Typed on my iPad, so forgive me for any spelling mistakes