January 7, 201114 yr Author comment_341153 SteveJ... so now I have 12 volts on both sides of the fuse and Nothing in the back with the brake pedal up. However, with the pedal still up I have continuity on one side of the brake switch and a solutly nothing on the other. When the brake pedal is down I have continuity on both sides of the switch. I'm super confused now. Any ideas? Link to comment https://www.classiczcars.com/forums/topic/38144-brake-lights-not-working/?&page=2#findComment-341153 Share on other sites More sharing options...
January 7, 201114 yr comment_341162 When you press the brake pedal, you Should have power on both wires of the brake switch, so it sounds like it's working correctly now.So now you need to trace that wire from the switch to the back to make sure the power is getting back there. Test at the bulb(s) if nothing then work towards the front. Test the connectors at the passenger side area, if the power is there then the break is easily between the paasenger kick panel and the rear.If no power on that wire on the passenger kick, then it's between the kick panel and the switch. Porcess of elimination. one wire and connection at a time. You'll get it, just take a breath and take a second look. Link to comment https://www.classiczcars.com/forums/topic/38144-brake-lights-not-working/?&page=2#findComment-341162 Share on other sites More sharing options...
January 7, 201114 yr comment_341169 SteveJ... so now I have 12 volts on both sides of the fuse and Nothing in the back with the brake pedal up. However, with the pedal still up I have continuity on one side of the brake switch and a solutly nothing on the other. When the brake pedal is down I have continuity on both sides of the switch. I'm super confused now. Any ideas?If you are using a tone for continuity, you CAN get a tone on the downstream side of the brake light switch to ground if you have lightbulbs in the sockets and the brake pedal is up. That is why I specified voltage instead of continuity, and that's why I prefer a voltage reading over a noid light.(Side note: I work on AC equipment, and in doing continuity checks, we can get fooled by thinking we have continuity when we are actually reading across a transformer.)PLEASE download the FSM from the XenonS30 link in my signature. You can go to the BE section of the FSM and find a simplified drawing of the stop light circuit. Print it out and use it as you go through your diagnostics. If you get stumped, you can tell us what you were doing and where. Then we can look at the diagram and help you out better.Also, when describing continuity or voltage measurements, please describe where you placed the meter probes. That will help us figure out what you're seeing. Link to comment https://www.classiczcars.com/forums/topic/38144-brake-lights-not-working/?&page=2#findComment-341169 Share on other sites More sharing options...
January 12, 201114 yr Author comment_341780 Thanks ya'll for all your help!! Link to comment https://www.classiczcars.com/forums/topic/38144-brake-lights-not-working/?&page=2#findComment-341780 Share on other sites More sharing options...
January 12, 201114 yr comment_341786 So does that mean you've made some progress, or are you just waiting until I can make it down your way? Link to comment https://www.classiczcars.com/forums/topic/38144-brake-lights-not-working/?&page=2#findComment-341786 Share on other sites More sharing options...
January 12, 201114 yr Author comment_341796 Haha well untill it gets warmer Im not doing anything. All my gauges on the dash quit working this past weekend so I have a few more problems with all the electrical. So im trying to gather patience before i even touch the car now haha. Link to comment https://www.classiczcars.com/forums/topic/38144-brake-lights-not-working/?&page=2#findComment-341796 Share on other sites More sharing options...
January 15, 201114 yr Author comment_342202 Finally got the brake lights working. Found out my wire running from the switch to the tail lights was bad and grounding out somewhere in the line.. Took it out and replaced with a new wire. Temporary fix till I can tear apart the dash and see what's up. Again thanks for all of your help!! Link to comment https://www.classiczcars.com/forums/topic/38144-brake-lights-not-working/?&page=2#findComment-342202 Share on other sites More sharing options...
January 15, 201114 yr comment_342206 A common place for a wire to short to ground would be where it passes through a hole in the sheet metal. If the grommet is missing, the wires can rub against the metal. It's interesting that it didn't take out the fuse if it was shorting. Link to comment https://www.classiczcars.com/forums/topic/38144-brake-lights-not-working/?&page=2#findComment-342206 Share on other sites More sharing options...
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