2003 Honda S2000 DRL

Hi guys,

I need some information, I am planning on installing drl on a 2003 Honda S2000. (canadian law requires it)

I did a search and I found a great "how to" on this drl install. here it is : http://alavigne.net/Motorsports/FeatureReports/S2000/DRL/index.jsp  <----A very big thank you to Andrew.

Here is the diagram . http://yfrog.com/iyschematic2regularj

Description of what this Hamsar 45060 : reduces the highbeams by 60%

I am having a hard time finding this hamsar 45060. So I thought if I can get the resistors value, all i have to do is put it on pin 30 (of the hamsar 45060) and can use a regular relay

thanks

I am sure there is a formula out there, but I am no good at calculating . The highbeam are 55 watts.

Testing is the key

Strange that the Law is retrospective. But that module is not a resistor - it is a dimmer - a MOSFET or similar set to (say) 40-50% duty cycle. But if you want to use a 50W - 100W resistor that may compromise halogen lifespan (undervoltage/undertemperature), we can continue down that path.... Though if the GNDs ca be isolated,it may be better connecting the 2 highbeam bulbs in series... Otherwise a PWM circuit as below but set to 40%-60% duty cycle feeding a 20-80A MOSFET or two....

Now I am really lost! I have no idea what you wrote.

I think trying to find that relay looks like my only option.

Testing is the key

A relay to do what - connect the two driving lights in series? Or connect a 50-100W resistor? The Hamsar is not a resistor.

Basically I am trying to do is LOWER the intensity on the hight beams   http://alavigne.net/Motorsports/FeatureReports/S2000/DRL/index.jsp

I would like to know what I use to reduce the power on the high beams by 60%, to make them look like drl. The high beam are 55watts bulbs

thanks

Testing is the key

Let's cover some basics.... Dimming of halogens is NOT proportional to voltage (unlike tungsten and incandescent bulbs). Hence 60% dim = 40% brightness may mean 60% of full rated voltage. HIDs cannot be dimmed by dropping voltage. I doubt that you would have to retrofit DRLs in a locally approved vehicle, but being a simple safety feature the law may be retrospective. To dim your halogens or HIDs, you need a circuit that switches on and off quickly - aka a PWM circuit. However, HID supplies may not tolerate such switching. (Those with real ballasts are probably ok.) You could try a 50% duty cycle multivibrator made from transistors, 1 or 3 inverter gates etc. Or you could use the 555 circuit above which is settable from 0.1% to 99.9$ duty cycle (on time to off time) to dim LEDs, fluorescent lamps, etc. For a fixed duty cycle, R1 & R3 could be changed and the pot R2 omitted. The Rout is connected to a MOSFET of 20A or higher rating that grounds or powers the beams. BTW - this switching is fast - like a few hundred or or several kilo Hertz. It cannot be done with relays. Or you google and find a link like hamsar...ProductType=Electronics etc. (Again - note the "solid state" labels - they are NOT resistors. Nor will they merely reduce voltage.)