How can I underdrive my 50W fog bulbs so they last forever as my Canadian DRL lights.
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How can I underdrive my 50W fog bulbs so they last forever as my Canadian DRL lights.
How can I underdrive my 50W fog bulbs so they last forever as my Canadian DRL lights. They would still be quite visible at 40watts I would guess and taking the volts down by XX percent should add a few thousand or more hours of life. Resistors ?? But which ones would I want ? I don't know.
I haven't tested the actual voltage to the bulbs yet.
I know that LED's last forever but I just spent a whopping $15 on a pair of Hella Yellow bulbs to go in my yellow laminated fogs so I want to explore the incandescents.
I haven't tested the actual voltage to the bulbs yet.
I know that LED's last forever but I just spent a whopping $15 on a pair of Hella Yellow bulbs to go in my yellow laminated fogs so I want to explore the incandescents.
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<p> </p><p>I understand that running halogens at low voltage disturbs the redeposition cycle, and may not lead to increased life. https://en.wikipedia.org/wiki/Halogen_lamp</p><p> </p>
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<p> </p><p>I understand that running halogens at low voltage disturbs the redeposition cycle, and may not lead to increased life. https://en.wikipedia.org/wiki/Halogen_lamp</p><p> </p>
I'm hoping to only underdrive them a little bit. For example if they are getting say 13.5V at the lights I'd like to take it down to 13 or 12.5V.
I should measure my headlights V as that is what the Canadian cars use as DRL's - a lower voltage is sent to the headlights so that they last much, much longer.
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Much more technical than in was expecting.
I thought I could thrown in a few resistors like my ATV heated grips run when in the low setting and call it a day. - Ceramic Resistor
I thought I could thrown in a few resistors like my ATV heated grips run when in the low setting and call it a day. - Ceramic Resistor
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Much more technical than in was expecting.
I thought I could thrown in a few resistors like my ATV heated grips run when in the low setting and call it a day. - Ceramic Resistor
I thought I could thrown in a few resistors like my ATV heated grips run when in the low setting and call it a day. - Ceramic Resistor
Assuming a lamp is rated for 50 watts at 14 volts, it's got a resistance of 3.92 ohms. If you put a 1 ohm resistor in series with it, total system wattage will drop to 40 watts, of which the resistor will be dissipating about 8 watts and the lamp will be dissipating about 32.
Last edited by Joe Perez; 07-25-2015 at 11:10 PM.
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You can, but as Ted noted, they will generate quite a lot of heat, so mount them appropriately.
Assuming a lamp is rated for 50 watts at 14 volts, it's got a resistance of 3.92 ohms. If you put a 1 ohm resistor in series with it, total system wattage will drop to 40 watts, of which the resistor will be dissipating about 8 watts and the lamp will be dissipating about 32.
Assuming a lamp is rated for 50 watts at 14 volts, it's got a resistance of 3.92 ohms. If you put a 1 ohm resistor in series with it, total system wattage will drop to 40 watts, of which the resistor will be dissipating about 8 watts and the lamp will be dissipating about 32.
Sweet, I will try this.
They will be mounted around the front fender and get some airflow.
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FYI on a Canadian made car the DRL modules black with white wire is the one that activates the headlight DRL's. remove it and its manual only.
With that out of the way and the resistors having shown up I proceeded to install my Hella yellows into the fogs.
Resistored light on the passenger side regular in drivers. Yes that resistor gets hot, we will see how it survives down there. Trying it this way and see how things go for a few months.
With that out of the way and the resistors having shown up I proceeded to install my Hella yellows into the fogs.
Resistored light on the passenger side regular in drivers. Yes that resistor gets hot, we will see how it survives down there. Trying it this way and see how things go for a few months.