4th Gen (2024+) Topper Third Brake Light Installs

Fresh thread to collect examples of how to add a topper third brake light to a 4th Gen Tacoma.

 

When faced with having to power a CHMSL ( third brake light) on a topper on a fourth gen Tacoma it’s a little more complex than on previous gens. As the new ones are all L.E.D. the stop and turn are the same wire . I found myself in a position of having to crimp-splice or cut and solder to gain access to the stoplight circuit at the tailights. Niether of these were acceptable to me as I didn’t want to butcher my new truck. Fortunately FBC harness solutions came through with a “ T” harness for the 4th gen Tacoma! When installed between the trucks wiring harness and the tailight it gives you pigtails to attach the stoplight and ground wires to the logic box , the logic box takes the stoplight signal and keeps it constant so the CHMSL will not flash when you have your turn signal on. A 2 wire harness was ran following the trucks harness across to the drivers side and connected to the logic box which was secured to the d/s tailight harness . All the grounds were terminated on the vertical box support close behind the d/s tailight assy. It is importantl to use an L.E.D. Specific test light to ensure your connections are correct , as well as using the high quality low melt heat shrink butt connectors to ensure long term integrity of your connections.from there I made a short lead from the same 2 wire harness “from the local parts store by the foot” was ran out from under the bed rail cap . It will pull up easily and if you look up through the tailight opening you will see a beady made hole to run your wire through out into the box Test your stop signal output and put the lights back, zip tie all your wiring thoroughly. Ready for your cap!

 

these guys don't have a solution for the light itself but I anyone looking to relocate the brake light will also need this, if you have the cameras...

Camera relocation harness

Tundra Camera Relocation Solutions | GG.OFFROAD Store - Elevate Your Off-Road Vision — GG OFFROAD

 

Hi @daveeasa -- are these harnesses available? I may have missed it on your website. Thanks!

 

4th gen Tacoma brake? This is the thread with more history and note the last post w gg offroad link.

perhaps we continue this discussion in that thread? Assuming 4th gen Tacoma brake.

 

Hi @daveeasa -- yes 4th Gen Tacoma brake light tap is what I am looking for specifically. Thanks! Which thread are you saying to reference? Apologies for the confusion

 

Sorry, paste didn’t work.

https://www.tacomaworld.com/threads/2024-tacoma3rd-brake-light-feed.834366/#post-29892733