Weird brake lamp problem

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
JayS13Project
Posts: 33
Joined: Sun Oct 23, 2011 10:01 pm
Car: 1991 240sx Fastback Base model with issues.
Location: Los Angeles

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So my stop lamp fuse kept popping a while ago so I decided to leave it until I had time to fix it. So I decided to rewire my third brake light today because the ground wire was chopped. So I fixed that and popped a new fuse in & it worked. When I got to work they were no longer working again, but this time the fuse didn't pop. Weird. I checked the illumination wire that everyone has problems with and still nothing all other lights are working including dash. Any ideas?


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kouki munster
Posts: 2195
Joined: Wed Nov 09, 2005 6:13 pm
Car: 97 base 240
Location: Anderson, SC

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Put in a new bulb, it is uncommon but sometimes the bulb can cause issues like this, also check the wiring for any shorts to ground or broken conections.

JayS13Project
Posts: 33
Joined: Sun Oct 23, 2011 10:01 pm
Car: 1991 240sx Fastback Base model with issues.
Location: Los Angeles

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kouki munster wrote:Put in a new bulb, it is uncommon but sometimes the bulb can cause issues like this, also check the wiring for any shorts to ground or broken conections.
Put all new bulbs in not too long ago. The running light works just not when I press the brakes. I didn't see anything obvious that would cause a short. Wouldnt the fuse pop like it did before?

JayS13Project
Posts: 33
Joined: Sun Oct 23, 2011 10:01 pm
Car: 1991 240sx Fastback Base model with issues.
Location: Los Angeles

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Bump

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Lobo240sx
Posts: 779
Joined: Wed Dec 01, 2010 7:39 am
Car: 1991 Nissan 240sx Coupe SR2.35DET Redtop Build
Location: Austin, Texas USA

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kouki munster wrote:Put in a new bulb, it is uncommon but sometimes the bulb can cause issues like this, also check the wiring for any shorts to ground or broken conections.
This. The contacts on the bulbs might have melted together causing a short. I've had this happen in the 240 as well as my Corolla. Check the bulb and sockets for corrosion as well. Make sure there aren't any naked wires touching the frame of the car which could also cause a short. Could be a bad brake switch or brake stopper not closing the switch all the way.

I chased this similar problem for awhile all for a $5 piece of plastic on the brake pedal. The fuse didn't blow all the time.
It stopped right after I changed the bulbs (which the contacts were melted together on the bulbs) for awhile then it was back to it again a few months later. Ended up being the plastic brake stopper on the back of the brake pedal. Have you added any aftermarket lights to your car?? (fog lights, neons, etc)

JayS13Project
Posts: 33
Joined: Sun Oct 23, 2011 10:01 pm
Car: 1991 240sx Fastback Base model with issues.
Location: Los Angeles

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Lobo240sx wrote:
kouki munster wrote:Put in a new bulb, it is uncommon but sometimes the bulb can cause issues like this, also check the wiring for any shorts to ground or broken conections.
This. The contacts on the bulbs might have melted together causing a short. I've had this happen in the 240 as well as my Corolla. Check the bulb and sockets for corrosion as well. Make sure there aren't any naked wires touching the frame of the car which could also cause a short. Could be a bad brake switch or brake stopper not closing the switch all the way.

I chased this similar problem for awhile all for a $5 piece of plastic on the brake pedal. The fuse didn't blow all the time.
It stopped right after I changed the bulbs (which the contacts were melted together on the bulbs) for awhile then it was back to it again a few months later. Ended up being the plastic brake stopper on the back of the brake pedal. Have you added any aftermarket lights to your car?? (fog lights, neons, etc)
Thanks for the detailed response I fiddled with the switch on the brake fedal not too long ago made sure it was working and no wires were making contact they are working again now. Weird maybe it is that. Lol Im going to the junkyard tomorrow to see if I find another plactic piece.

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Lobo240sx
Posts: 779
Joined: Wed Dec 01, 2010 7:39 am
Car: 1991 Nissan 240sx Coupe SR2.35DET Redtop Build
Location: Austin, Texas USA

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JayS13Project wrote: Thanks for the detailed response I fiddled with the switch on the brake fedal not too long ago made sure it was working and no wires were making contact they are working again now. Weird maybe it is that. Lol Im going to the junkyard tomorrow to see if I find another plactic piece.
You are better off going to the dealer and getting a new pair of brake stoppers. The ones at the junk yard are going to probably be old and crusty. I believe they are green now. They are only like 5 bucks.


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