This is a common issue among all led bulbs. The Chinese manufacturers just don't drop the input power on the tail low enough. The Cree bulbs I'm using draw 1w on the tail side. That's still too high. They need to be at least .5w. So to remedy this I purchased the PWM dimmer from Diode Dynamics and here is what I got...I found when I put LED bulbs in my tail lights the difference in brightness between running lights and braking lights was very close together and it was hard to tell if the brakes were on or not at night.
I did the same and run into the same problem. I think I know what it is, but have to do some testing. I think a socket modification is called for.So I installed new LED bulbs in my taillights a few days ago, and noticed that the two interior trunk lights are always fully lit as if the brakes were on.
Depends on what you're looking for. With the brake lights converted, the trunk lights are now look orange. Those need to be changed to maintain a uniform color.There should be no reason to upgrade the bulbs on the trunk lid to leds unless you plan to convert them to brake function. Otherwise it's just a waste of money.
You probably installed white LEDs. I ran into the same problem when I tried to do my side-lights. Bright, yes, but the front side light went from a nice amber to the color of lemonade. Lesson learned: buy the LED in the color that you want the light to be.The LED's just made the lights look washed out, too orangey for me.
That's nice, but it's not my aim to blind people behind me. A little brighter is nice. But the poster was complaining about LEDs were the brake mode wasn't that much brighter. No problem with the HP11. There is a very definite difference between tail and brake.HP11 has nothing on the bulbs I posted above (dubbed 30w Cree XB on the market). Our round reflector housings really suit the design of this bulb well since the emitters fire directly backwards. Unlike most other bulbs that fire directly out to the side and forward.
They are truly death lazers from behind. And they will light up signs behind you an eighth mile back, lol.