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| This thread is about: DRL - Daytime Running Lights, it's in How To at the Honda Civic forum Civinfo; Hello! Since it is mandatory in my country to drive with lights at daytime, I produced a circuit for this purpose. It all started with ... | ||
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Ezermester
Wheelnut
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DRL - Daytime Running Lights
Hello!
Since it is mandatory in my country to drive with lights at daytime, I produced a circuit for this purpose. It all started with my 7gen Civic and its LED indicators for A/C that were invisible at day. I made a circuit that turned on the lights without the car knowing they were on, hence diodes stayed bright. But it is so much simpler for the 8gen Civic, since it has somewhat different wiring and the, before the mod, unusable feature named AUTO lights. All the circuit does is open a MOS-FET transistor after 8 seconds from ignition II being turned on, and the wire responsible for light is being grounded. Excatly what the original switch does. And as a dessert, when it becomes dark, the sensor on the windshield switches on the night setup of the dash lights. So you just keep the switch in AUTO position and forget about it. In adition, if you turn of the lights, or rotate to the parking lights position, the circuit turns off and the lights are according to the switch position. Instalation is simple: -a customized fuse to deliver voltage on ignition II dsc04377cw4.jpg -4 wires soldered to original pins in the lightswitch connector: 12:black-ground, 11:grey-parking lights, 10:brown-lights, 9: pink-OFF dsc04376nc1.jpg -PCB with elements dsc04378yu7.jpg dsc04379xf3.jpg Any suggestions, questions or remarks welcome. Andrej Last edited by p64; 3rd July 2007 at 18:40. |
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#2 (permalink) |
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Magic Rear Seat
Join Date: 4th October 2006
Location: Hungary
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hey good job man!
I also want to do something similar! my solution will be the following: I will use the oil pressure switch to turn on the two low beam bulbs at the front (nothing else!) and I will keep my switch in AUTO so when the engine is running oil press. switch will turn on the front lights and when it get darker the AUTO mode turns on the rest. |
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#3 (permalink) |
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Ezermester
Wheelnut
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I did something similar on my 7gen civic, but that means going into the fuse box, more soldering, relays and so on.
And 8 seconds is plenty to turn on the car, and it is adjustable. I would be happy to send you the circuit picture and parts needed, since my version needs only 1/2 hour or less in the car. Think about it, Andrej |
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#4 (permalink) |
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Magic Rear Seat
Join Date: 4th October 2006
Location: Hungary
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well ok, you could send me the circuit nad further details.
I will might mix it with my idea... (I will send you my email address in a private message) thx |
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#7 (permalink) |
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Ezermester
Wheelnut
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New circuit and a 200mA fuse:
![]() ![]() ![]() All parts needed: ![]() Soldering to the terminals: ![]() Box mounted on the right side of the steering assembly: ![]() Power supply from power windows, first fuse, 7.5 A: ![]() To the date installed in two civics, one HID, one regular lights, working perfectly. Regards, Andrej |
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#8 (permalink) |
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Ezermester
Wheelnut
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Update: it seems that Honda updated the firmware, and among other things it is now impossible to use this gadget in a day/night illumination setup. You are left with a plain automatic light switcher. For technically minded, when you ground the brown wire, the car knows the lights are on and switches to night mode regardles of the light sensor intervention.
This was tested on a 2008 model, and I can't really tell which is the last working version. Andrej |
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#9 (permalink) |
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Magic Rear Seat
Join Date: 4th October 2006
Location: Hungary
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my solution is: I have covered the light sensor. It thinks it is always dark. So I keep my switch in AUTO and with IGN on/off the light go on and off
ps.: to cover the sensor is VERY tricky!! I worked a lot on it. If anybody tries to cover it and test it on a very sunny day will know why. |
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#11 (permalink) |
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Valve Cap
Join Date: 20th August 2007
Location: Slovenia
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Would you be willing to make such a circuit for me and send it? For a price of course.
Sem pa iz Novega mesta, tko da se lahko tut po telefonu prej slišiva, če hočeš... |
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#12 (permalink) | |
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Supporter
Valve Cap
Join Date: 7th November 2007
Location: Budapest, Hungary
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Quote:
I am thinking about how I can get rid of this 'feature'. Do you know what this brown wire is used for? I mean pin #4 in Automatic Lighting/Rain Sensor module. |
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#13 (permalink) |
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Ezermester
Wheelnut
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Hello!
I am glad that tis topic lives on. On my car, the grey wire is for parking lights, and brown is for all the lights, when you have the switch turned on, both are grounded. So, without grounding the grey wire, you bypassed the computer somehow. I don't think there is a way around this now. Maybe it is in the firmware, maybe they've changed it so that the grey wire does not matter anymore when lights are on. Sorry. Andrej |
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#14 (permalink) |
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Wheelnut
Join Date: 7th December 2007
Location: London, UK
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ask a silly question, but surely if its law to drive with sidelights on, why dont car manufacturers put that feature on the car for those countries? surely it should be a law for the manufacturers to add this feature to make it safer/easier for the drivers
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#15 (permalink) | |
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Valve Cap
Join Date: 7th November 2007
Location: Budapest, Hungary
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Quote:
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#16 (permalink) |
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Wheelnut
Join Date: 7th December 2007
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rural = countryside, urban = cities/towns
oh ok, fair enough for hungary it will not work, but in sweeden it is the law to drive with your side lights on, hence volvo and saab have auto lights out there (volvo outside sweeden also have the side lights on permenantly) |
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#17 (permalink) | |
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Valve Cap
Join Date: 7th November 2007
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Quote:
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#18 (permalink) |
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Ezermester
Wheelnut
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Try it!
But I think that the sensor also just ground the wire, and does not get any info through it. It communicates through the b-can bus, wher it gets information of the combination switch position, since at auto position, OFF wire and POS light wire should not be grounded. And then via the bus it gives information for the night mode. But still, the updated version behaves different. Beats me. I'll dig into testing in about 12 days, when I get home from abroad. Andrej |
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#19 (permalink) |
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Valve Cap
Join Date: 23rd February 2008
Location: Estonia
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Hello Andrej,
I have 2,2 cdti 1/2007. Does your first solution work on this car (approximately when the updated version was launched)? Thank you for nice work anyway. |
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#20 (permalink) |
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Ezermester
Wheelnut
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Hello!
I can't tell you for sure, but in my opinion, you have a good chance that it does. Here is a rather easy test: get to the connector on the back of the combination switch (top cover off, held by clips, lower cover held by three screws), find the brown wire (pin 10), stick one end of the wire in that pin and the other in the pin 12(black wire) or any metal part of the car's body. The lights should come on, but the dash should stay the same, and there should be no green indication light on your cluster. Andrej |
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LinkBack to this Thread: http://www.civinfo.com/forum/how/6675-drl-daytime-running-lights.html
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