Quote:
Originally Posted by Cougar25
Agree with the replies you've received so far but I'll add one. My 2021 F-150 has to have the headlight switch in Manual On. If you have the lights in Automatic, my camera won't work.
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That's a "new twist" that I haven't heard before....
Typically, with the headlight switch in AUTOMATIC, at dusk the headlights AND the 7 pin connection are both active (headlights and running lights turn on). There is a "limitation" however. With the switch in AUTOMATIC, during the day, if you turn on the windshield wipers (or have rain sensing wipers that turn on by themselves) only the headlights will turn on when the wipers are on and the running lights (through the 7 pin connector) do not work, so the rear camera would not work.
Is your F150 wired differently??? Every Ford truck that I've seen, when the tail lights are illuminated, the running lights also are illuminated through the 7 pin connector. The "difference" is that the running lights are apparently NOT powered by the headlights but are powered by the tail lights. So, daytime running lights (DRL) have no affect on the trailer.... Only the tow vehicle tail lights affect trailer running lights.
If your truck doesn't power the running lights with the headlight switch in AUTOMATIC, then you might want to check to see if your tail lights come on at dusk with the switch in AUTO..... Strange situation if they do and the trailer running lights don't...