If pressing the brake makes the dash lights come on, it probably means a short or other wiring fault in the rear or in the wiring leading back to the rear lights. We replaced the brake switch (it didn't look broken) and that didn't help. Got an electrical question here. Put normal bulbs in and the nearside one didn't do sides but still did brake. Mark helpful Sorry to Dan but it is actually the headlights that come on not the sides as my missus said. The brake lights were also permanently on when I switched on the headlights which I hadn't noticed before. you say brake lights come on with headlights and stay on Yes, but I have just discovered it is a dim light, not the full bright light you get when you depress the pedal. When I hit brakes in my truck, trailer lights illuminate but they are just as bright as my running lights. Auto electric problems can be very difficult to track down. Just hooked up new LED lights on my trailer. The brake lights work fine if the headlights are off, but when i turn on the headlights, the brake lights also turn on. So when I don't turn the headlight witch to the on position the brake light go on an off when I hot the brake pedal like normal. No light ? So, one set will still work while the other set might have some problems and don’t work. I am having a problem with my 1999 Honda Civic DX. So, for example, if you own a 2009 Club Car Precedent, you would not want to order a 2004-2008.5 light kit as it will not come with the necessary harness to hook up your lights… Sometimes tail lights may not work properly while the brake lights are fine. Have taken it to a jeep dealer and another shop and one told me they could find nothing wrong -- the dealership told me they fixed … When I turn on the headlights, the brake lights come on too. The LED bulbs both worked brake and side lights. Discussion Starter • #1 • Nov 19, 2011. Ok so this is my first vw ever since I'm building my 95 Acura legend gs at the moment I bought this 1997 jetta gls 2.0 automatic sadly but it's my new get around. Alright, my brake lights and blinkers work fine with my headlights off BUT if I turn them on or the parking lights, my right (passenger side) brake light and blinker wont work. Any help would be a great help. The brake lights work fine when the headlights and running lights are off, but when I turn the lights on the brake lights will not work and makes the rear running lights go out. Your dash illumination lights are on the taillight circuit (separate from the brake light circuit). Hello, I'm trying to help a friend with her 2010 Corolla. Hello, I've recently come across a problem with my 05 Grand Caravan SXT, where when I turn the headlights on, the Taillights don't work, but when using the brake light and signal lights, it works perfectly fine. When I turn headlights the brake ligbts come on like I am appling pressure to them.. Ot sure why this happening but it makes it hard for my wife to drive at night. I have tried the search function to avoid a post, but did not uncover anything. Brake lights come on with headlights Got an electrical question here. When she puts on the headlights, all 3 brake lights turn on. They usually come in two sets, front and back, with the switches coloured coded: amber for rear fog lights and green for front fog lights. A coworker recently tagged the front driver’s side of my car which caused me needing the front driver’s side headlight to be replaced. When the headlights are off, the brake lights work (no problem). Brake lights work fine until the headlights are turned on. 06-01-2011, 03:39 PM #2. zatog. The brake lights function properly when the headlights/parking lights are off. In most cars you’ll need to turn your dipped headlights on before pressing or twisting the fog light switch. 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