2006 base coupe replaced the driver side brake light bulb and it blew out the first time I stepped on the brake pedal.
First orginal bulb just brake light out.
Second bulb both brake and tail out.
Third bulb just brake light.
What is causing this problem?

 

No one knows or has any ideas?

 

Only thing I can think is a ground is out somewhere in some other system(s) above the brake lights and it is using the brake light path for a ground resulting in a lot more current going through the bulb. Did you do any rewiring lately? Thats about the only thing I can think. Does any other system or systems go out when that bulb blows? That would be a clue to where to look. If it only happened once I would replace the bulb and keep an eye out on it. You can get a bad bulb sometimes.

 

Check you voltage, check for water in and below blub in trunk. i read where car had this problem water in housing and got into lock pump and caused fire, i have seen some xfires on line where it appeared that fire started in taillight area area.i also found where a jumper harness having resistance that drops the volts by 1 2003 merecedes repaired this. also check the blub holder mined melted not getting go contact keep replacing blub replaced socket. also google about brake lights

 

Thanks for the suggestions. The car is completely stock, so no rewiring and this was with three different bulbs. They light up for a split second then blow out. I'll have to get a volt meter and check the voltage going to the bulb. Also there is no water or moisture in there that I can see.
Thanks again for the help.

 

I know this sounds silly but ..............is the filament actually burnt out? By that I mean you can see that it has vaporized and you are not just assuming it to be burnt out because the idiot light comes on. There are posts that mentioned problems with the sockets and problems installing the new bulb.

Did the actual brake light or rear light go on and be witnessed by someone?

These are dual filaments of different wattage and some have installed them wrongly somehow and had tail lights go on when they put the brakes on but no brake lights.

Over voltage would appear not to be the cause as other lights would suffer as well.

 

Filaments are broken in half.
Both on the new one that blew brake light and tail light
One filament on the other two that just burnt brake light.

 

What kind of bulbs are you buying? I had to go behind the counter of my local parts store for the correct one. The metal contacts are kind of triangular - not round. Just wondering....

 

I'm no electrician but I cannot see how you could wire up the bulbs to increase the voltage simply using just one battery.
If that was possible then you could bump it up very high and be a real danger.

 

Well, he didn't say 'voltage', he said 'current', but that is wrong anyway.
You CAN blow a bulb with too much voltage, but all that is available is 14.7v,
but there is no way to force more current through a bulb, it is, after all, just a resistor.

I would look for a loose connection, either B+ or ground, because high frequency voltage changes CAN blow a bulb due to the heating / cooling of the filament.

 

My bet would be the wrong bulb or bad ground.

 

1944 was a very good year for birthdays, right ?

 

You got that rite.

 

Well the conectors are round and it is a sylvania part#1154
Thats what I pulled out of it. If this is the wrong bulb what is
the right number for it?

 

I Had The Same Difficultly With My 2008 Crossfire Last Year. The Problem Was The Bulbs--- I Don't Remember The Specific Manufacturer But Bulbs Have A Great Tendency Of Blowing Out Prematurely. I Do Remember I Read The Answer Some Where On The Forum. I Got New Bulbs At Napa Autoparts ( Don't Remember The New Brand), But Have Had No Problemes Since. In Actuality,--- The Forum Had A Posting Which Gave Me All The Information For The Bulbs And Also Showed Me How To Replace The Bulbs In A Convertible Without Removing The Interior Portions Of The Trunk.

 

This link gives all the stock bulbs and LED replacements..... it is in the stickies list

https://www.crossfireforum.org/forum...s-numbers.html

 

That's a 6 volt bulb.
You want a 12 volt, 21/5 Watt (#21/5W)

 

Yeah I see that now that i looked at the part numbers. I think the inspect place threw one in
to make it pass and that is what I went by when I pulled it out. I'll buy new bulbs and try them
out. Hope that is all it is and man do I feel dumb right now. Thanks for all the help everyone.

 

Never never ever say that you feel dumb! Show me someone who never failed and I'll show you someone who never did anything or took any risks. Only by doing something and it not going right do we learn. I'll tell you a brief story about my first oil change. I got the oil, filter, tools to do the job. I put one can of engine flush in the oil cap, and ran it for 15 minutes like it said. I then took the drain plug off and changed the filter. I let it drain (drip, drip, drip) for about 15 minutes and wiped the drain plug and dipstick. I then opened each quart of oil one can at a time and put it in the oil fill on the valve cover. 5 quarts later I checked the level, and nothing registered. Yeppers, you guessed it, I forgot to put the oil plug back into the oil pan! Way back in 1973, oil was very cheap, but that lesson has stuck with me for almost 40 years. I (since then) recheck everything before adding any fluids twice! So its not being 'dumb', its just a learning curve. So come on in, tell us all these stories! Learn all about our cars, and save bundles of cash with the help you get here in this forum. In closing, I probably would have looked at the bulb number and got what was in it as well. Why would I doubt the bulb number that came out? Peace my friend!

 

Double post (FIRST TIME!)