Checked the diameter of the mounting holes in the GPS unit and then drilled out the template holes to fit the unit. Labeled each of the three wires from the unit with their function. Slid the wires through the center hole of the template into the storage area.
Clipped the 9 pin plug into the solder holder for the AOA unit. Soldered 22 gage wires for the power, ground, dimmer control, and dimmer ground to the assigned plugs. Placed 5/8 inch lengths of heat-shrink tubing on each wires at the solder joints and set them in place with the heat gun. Created labels for each of the wires and set them in place near the plug with the heat gun. Additional wires and terminals to be added during the next work day.