/en/qa/tag/2018-ford-f-150 Powered by Question2Answer /en/qa/85584/parking-light-relay-12v-4-pin <p> 2018 F-150 STD KEY W/Keyless</p> <p> 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?&nbsp;<img alt="" src="/en/qa/?qa=blob&amp;qa_blobid=12040134419833246313" style="width: 261px; height: 355px;"></p> Ford /en/qa/85584/parking-light-relay-12v-4-pin Thu, 20 Dec 2018 18:42:35 +0000