Final answer:
The wire color code for the left turn signal circuit on the trailer 7-way power connector is typically yellow.
Step-by-step explanation:
The wire color code for the left turn signal circuit on the trailer 7 way power connector is typically yellow. In a 7-way trailer connector, there are typically seven pins labeled with numbers. Pin 5 is usually reserved for the left turn signal circuit and the wire connected to that pin is usually yellow. This wire carries the electrical signal that activates the left turn signal lights on the trailer.
It's important to note that wire color codes might vary slightly depending on the manufacturer or specific trailer wiring standards, so always refer to the wiring diagram or instructions provided with the trailer or consult the vehicle's owner's manual for accurate information.