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how tell if a brake light is out


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04nata 
Copper - Posts: 358
Copper spacespace
Joined: April 22, 2008
Posted: August 18, 2008 at 3:24 PM / IP Logged  

I found out an easy way to tell if you have a tail light out,,,,,,,(other than just looking)

I know that on my '04 Hyundai Sonata, the cruise control will not set if you have a burnt out tail light

FYI

reax222 
Copper - Posts: 220
Copper spacespace
Joined: March 11, 2006
Location: United States
Posted: August 22, 2008 at 3:20 AM / IP Logged  
It's becoming more and more popular to integrate some kind of sense on the tail lights. The down side to it, is if you ever hook up a trailer hitch, you have to install a power converter (or a pack of relays) to isolate the factory tail lights from the added draw of trailer lights.
I came across a Jeep Cherokee that had a display that would show if the taillights were malfunctioning. We had tried a diode converter but ended up having to add a power converter to keep it from telling us we screwed up the BCM/lamps.
toxic0n 
Member - Posts: 11
Member spacespace
Joined: November 19, 2007
Location: British Columbia, Canada
Posted: September 11, 2008 at 11:35 PM / IP Logged  
my BMW has this for for turn signals, headlights (lo and high beams) as well as all the tail lights. I'm not sure how it's done but it has something to do with sensing how "good" the ground connection is, I guess. No ground = burnt out light bulb or no light bulb at all.
jayson33 
Copper - Posts: 165
Copper spacespace
Joined: June 12, 2008
Location: Indiana, United States
Posted: September 12, 2008 at 10:17 PM / IP Logged  
My wifes BMW has the same thing But It also gives false alarms sometimes due to moisture Replacing "O"rings solved this problem
My wife thinks bagging a truck means you kick it in the truck nuts
bassbindevil 
Member - Posts: 5
Member spacespace
Joined: September 16, 2008
Location: British Columbia, Canada
Posted: September 17, 2008 at 4:52 AM / IP Logged  
If you wrap a number of turns of magnet wire around a magnetic reed switch, that should make the reed switch close when the brake light is on. I saw that suggested someplace, but haven't done it myself. This may not be feasible with LED brake lights, but maybe you just need more turns.
Then you could have the reed switch activate something, either to indicate that it's working, or warn that it isn't. A normally-close reed switch might be easier to work with, since it stays closed if there's a fault.
Is this bass really strong enough?

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