Third Brake Light?
The third - upper - brake light on my Ford pickup is completely blocked by a truck camper. I don't think I've ever seen a truck camper that has one. Come to think of it, I can't remember ever seeing...
Forum Discussion
There is rude, and then there is pointing out the obvious. Not the same.
Why isn't there one? Typical domestic vehicles need only a three wire, plus ground, system for lights. One for right, one for left and tail. The left and right also act as the brake for those lights. The third light obviously isn't tied into those, or it would blink every time you used a signal. It's on it's own lead.
So to run one on a trailer/TC through a plug, it would require a separate feed. I personally wouldn't trade the one aux left (from a 7 pin) for a third brake; I want it for my back up lights on the trailers.
7 pin: Hot, Ground, Brake, Left, Right, Tail....and Auxiliary. It's a choice with the systems we have. Or we can redesign the wheel and go with 8 pin....
Why isn't there one? Typical domestic vehicles need only a three wire, plus ground, system for lights. One for right, one for left and tail. The left and right also act as the brake for those lights. The third light obviously isn't tied into those, or it would blink every time you used a signal. It's on it's own lead.
So to run one on a trailer/TC through a plug, it would require a separate feed. I personally wouldn't trade the one aux left (from a 7 pin) for a third brake; I want it for my back up lights on the trailers.
7 pin: Hot, Ground, Brake, Left, Right, Tail....and Auxiliary. It's a choice with the systems we have. Or we can redesign the wheel and go with 8 pin....
