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Interior dome light noticeably dims when the brake lights are activated

Started by MaximRecoil, July 11, 2013, 12:33:38 PM

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A383Wing

fuses are good, holders are good...all my Chargers do this, my 56,000 mile Pontiac does this, and it has 6 lights in the back also...it's normal. I bet your car does it also...the lights don't "dim out"...they just flicker a bit when brakes are pressed..it's normal

Nacho-RT74

sorry sorry sorry!!! I missunderstood the original post!!!

I thought it was opposite, with door closed and press brakes then dome light comes ON diming sligthly... IT HAPPENS TO ME QUITE OFTEN!!! due a poor conection at brakes fuse holder ( I still have to fix that correctly )

yes definitelly you can get dome light dimming when pressing brakes and even more when hazzards on!!!
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

M5Ivan

I know this is an old thread, but I was having the same issue until I replaced my tail lights with LED bulbs and now the dome light doesn't dim at all when you press the brakes. I also replaced my front turn signal lights with amber LED's too and they are much brighter.

flyinlow

Yea LED's draw MUCH less amperage and they achieve full brightness quicker which is a safety concern on the brake lights.  The 1/10 sec quicker is 10 feet at 70mph.

The problem I have with them is they don't seam to light up the taillight housings and lenses as well as a "real" 1157 lamp does.   :brickwall:  I have tried them and they do O.K. from directly behind, they don't illuminate well from different views.

Maybe they have better LED 1157 since I tried them. What brand did you use?

M5Ivan

I bought these in red. https://www.superbrightleds.com/moreinfo/tail-light-bulb/1157-led-bulb-dual-function-27-smd-led-tower-bay15d-retrofit/2625/5698/

They light up great, but aren't cheap.
The only issue I have is my tail light harness has 2 different connectors and these only fit 4 of the 6. The connectors for the 2 lights at the middle of the trunk (at the key hole) have a different connection for some reason. I haven't figured out what light they will accept yet, but just having the 4 solved the issue anyway.

Dino

If it's not too much trouble, could you post pictures of the tail lights and parking lamps in action? I haven't seen any LED tail light I like. I like that the stock bulbs just show as globes instead of lighting up the whole lens. Also LEDs don't seem to be as bright during daytime, but maybe LEDs have improved over the years. Some LED brake lights out there are a bit too faint for my liking.
Extraordinary claims require extraordinary evidence.

M5Ivan

No problem, I should be able to get a picture today after I finish my heater install.

Dino

Extraordinary claims require extraordinary evidence.

M5Ivan

Quote from: Dino on March 25, 2017, 11:02:07 AM
If it's not too much trouble, could you post pictures of the tail lights and parking lamps in action? I haven't seen any LED tail light I like. I like that the stock bulbs just show as globes instead of lighting up the whole lens. Also LEDs don't seem to be as bright during daytime, but maybe LEDs have improved over the years. Some LED brake lights out there are a bit too faint for my liking.

Strange results. The inner lights are stock and are brighter than the LEDs when the lights are on. They are all the same brightness when you press the brakes. I still need to figure out what LED goes into the inner light sockets.

Dino

Thanks for the pics!   :cheers:

Yeah that's always been the issue with these LEDs. All 6 should be the same brightness but then the outer 4 should be brighter with the brake pedal depressed. I don't know why this happens. The LEDs do look good though. Maybe they will appear brighter in the dark.
Extraordinary claims require extraordinary evidence.

M5Ivan

The inner ones are the stock lights, that's why the brightness differs. Trying to figure out what bulbs they take.

Nacho-RT74

inners should be 5 watts bulbs which is the parking light intensity. Brake lights are 21 watts. Original inners I think were also small bulb sphere too.

Bulb PN is around there on bulb charts. It seems the original Bulb is not anymore available but was replaced for another one on similar specs
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

Nacho-RT74

Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

M5Ivan

Thanks Nacho! Just ordered 2 of the correct LED's in red. The 1156 LED's at superbright LEDs seem to be the ones that replace the 1095's.