Lol. I can do this shit in my sleep. You are correct, pin 87 doesn't get used at all with the single relay setup.
With the coil is unenergized (pins 85 & 86), pin 30 & 87a are connected. When you energize the coil (by turning on headlights) then pin 87a opens and 87 & 30 get connected.
__________________
2014 Ram 1500 4x4 Outdoorsman
Retro Shop Custom FXR Projectors | Diablo inTune | Moe's 87mm TB | BT Oil Catch Can
Toyo A/T II Tires | Bilstein 5100 Front & Rear Shocks | AirLift 100 Air Bags
Bestop PowerBoards | RollBak Bed Cover | BedRug
|