Parking Light Relay +12V 4-pin

Question

2018 F-150 STD KEY W/Keyless

I've figured out most of the wiring diagram. The one part puzzling me is the optional "Parking light relay." I understand that I splice one parking light wire, and connect it to two of the relay terminals. Then the other parking light wire looks like I do an inline splice, and take it to another pin on the relay. Finally I need to pull a wire from the 20 pin connecter, to the relay. Finally it shows the +12V 4-pin, do I need to pull a 12v power source to this relay? is that what the diagram is asking? 

Answer 1

I had the same confusion regarding my ford fusion... where to run that wire from the relay. I called tech support ans was told to grab the 12 volt constant from the 4 pin data link connector. I used the t harness and yes it had a 4 pin connector of which the red wire on the end was hot. I spliced into it and everything seems to be working ok.

One would think adding a simple dotted line drawn on the installation sheet from the relay over to the connector on the t harness 4 pin would clear this confusion up.