aus_rx400h Posted July 24, 2013 Share Posted July 24, 2013 Hi All, Hope I have worded this correctly. On my rx400h, I would want to rewire my LED tail light so that during day time, both sections of the tail light is lid when I hit the brake. I wonder if anyone has done this mod. Cheers. Quote Link to comment Share on other sites More sharing options...
cduluk Posted July 24, 2013 Share Posted July 24, 2013 I haven't done it, but i've thought about it! It can be done, you'll just need to do some advanced wiring to get the tail lights on the tailgate to illuminate at 12V during braking. Quote Link to comment Share on other sites More sharing options...
maseace Posted July 24, 2013 Share Posted July 24, 2013 You could probably just wire the inner lights to the wires of the outer lights, so both would always do the same thing. Quote Link to comment Share on other sites More sharing options...
cduluk Posted July 26, 2013 Share Posted July 26, 2013 You could probably just wire the inner lights to the wires of the outer lights, so both would always do the same thing. The outer lamps are actually 3-lead, while the inner lamps are 2-lead. The outer lamps have a ground, positive 6V, and a positive 12V for braking. The inner lamps only have a ground and positive 6V. The only way to make this happen would be to add a relay to each inner lamp (cutting power from the car) and wire 12V to the 6V lead, illuminating the lights completely for braking. It might sound complicated, but it's 100% doable. I wanna do it now! Quote Link to comment Share on other sites More sharing options...
1990LS400 Posted July 27, 2013 Share Posted July 27, 2013 I suggest you leave it alone. I don't know if it is still the case but the way your tail/brake lights are wires has in the past been a requirement in many countries to make it more obvious to drivers of following vehicles that brake lights were being applied ... i.e. so that taillights remained in their normal steady state when brake lights lit up. Germany went one step further and prohibited any rear bulb from being used for more than one purpose. The U.S. has for many years increasingly been a follower instead of a leader in these safety standards. Quote Link to comment Share on other sites More sharing options...
aus_rx400h Posted July 27, 2013 Author Share Posted July 27, 2013 The outer lamps are actually 3-lead, while the inner lamps are 2-lead. The outer lamps have a ground, positive 6V, and a positive 12V for braking. The inner lamps only have a ground and positive 6V. The only way to make this happen would be to add a relay to each inner lamp (cutting power from the car) and wire 12V to the 6V lead, illuminating the lights completely for braking. It might sound complicated, but it's 100% doable. I wanna do it now! Just what I need to know. Sounds like it's more complicated then I had hoped for, ie. daisy chained. I reckon it would look really special if you can make it work. I like both lamps to lid up like the Nissan GTR R35 :). Quote Link to comment Share on other sites More sharing options...
cduluk Posted July 27, 2013 Share Posted July 27, 2013 I suggest you leave it alone. I don't know if it is still the case but the way your tail/brake lights are wires has in the past been a requirement in many countries to make it more obvious to drivers of following vehicles that brake lights were being applied ... i.e. so that taillights remained in their normal steady state when brake lights lit up. Germany went one step further and prohibited any rear bulb from being used for more than one purpose. The U.S. has for many years increasingly been a follower instead of a leader in these safety standards. 1990LS400, that's an extremely good point, i hadn't thought about that. If both the inner and outer lamps illuminated together, it'd be incredibly difficult to differentiate between "on" and "brake". If it ever resulted in an accident, i could see a lawsuit! Quote Link to comment Share on other sites More sharing options...
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