So my prelude is a spoiler-less prelude. I recently put on a trunk with a spoiler. I had to swap the harness and use the spoiler trunk harness. Then I had a brake lamp light on, which makes sense because I didnt have the spoiler brake light plugged in.

Now I switched back to my spoiler-less trunk with the harness it belongs to, and the light is still on. none of my brake lights are burnt out.

What could it be?

thanks

 

First thing to do is make sure your brake fluid is topped up. Low brake fluid will pop that light on.

 

Its between the MIN and MAX line. More towards the MAX.

 

i would retrace your steps through the spoiler harness and just make sure nothing got knicked or cut and make sure all the plugs are connected and in tight.

 

The harness is good. Although I did have to re solder the ground wire in the middle of the harness and the 2 rear bumper lights.

I had to do it when I put the spoiler trunk on. and then again when i put back the spoiler-less trunk