Forum Discussion

Optimistic_Para's avatar
Jan 30, 2020

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 a trailer that has one, either.

What's up with that?

That third brake light is such an obviously good idea that I can't believe they don't come as standard.

I do see them with 5 lights across the top - two at the outer corners and three clustered together in the center - and I think I remember reading something about DOT required lights on certain widths of truck bodies and trailers. Apparently DOT doesn't require the upper brake light.

Has anyone here added an aftermarket third brake light to their camper? How hard would it be to do? If I do it, am I going to see flashing red lights in my mirrors?

25 Replies

  • You are carrying a house on your back and you are worried someone will miss a brake light? If they don't see the two of them on the camper then one more hidden in all the other things on the back won't help.
  • Worried about getting rear ended without a high mount brake light, and worried about getting pulled over by the cops for having a high mount brake light?
    Yup, I’m seeing the logic here....no, actually I’m not.
  • Or if you plug your camper into the 7 prong trailer cord, use the AUX wire. could work on a trailer too.
    Long before the third brake-light was common, I was putting them on dune buggies. But I would put a flasher on them.
  • Standard trailer wiring harness does not include a wire for a center light so there is no reason a trailer manufacturer would install that light. To add one you would need to tap into the wire that goes to your center light and run a new wire to that light, whether on a TC or to a trailer.

    Or install a converter as noted above.
  • If you have access to both tail lights, you can use a converter to add one!
    Etrailer sells them (been thinking about adding one to my TT).