Wattage and Sylvannia silverstars
I recently put some Sylvannia Silverstar low beams on my tc. I got them from the nearest Discount Auto. Anyway, the box said that the lights were 55 watts. However from reading some posts around here about the luminics, I hear that just the 5 watts over the standard 50 watts is likely to cause electrical problems (harness melting or possibly electrical fire). I've seen a lot of people with this mod. So either they don't care about it or there's a 50 watt Silverstar version somewhere out there. I have yet to find 9006 Silverstars that are 50 watts. thnx. So lemme know if i should worry or not.
There are several standards for rating automotive light bulbs. Some require the power to be measured at 12.8 Volts, others at 12.0 Volts (and I believe 13.2 Volts is used as well). HB4 / 9006 type bulbs are rated 55 Watts at 12.8 Volt, and 51 Watts at 12.0 Volts. Same bulb just measured at two different voltages.
And in case someone finds that the numbers do not jive with Ohm's law, when you run the bulb at 12 Volts rather than 12.8 Volts, it will run a tad cooler, and the resistance of the filament will be a little less. The hotter the filament, the higher its resistance.
And in case someone finds that the numbers do not jive with Ohm's law, when you run the bulb at 12 Volts rather than 12.8 Volts, it will run a tad cooler, and the resistance of the filament will be a little less. The hotter the filament, the higher its resistance.
SilverStars will not cause electrical problems unless you touch the bulbs with your bare hands! I've had my SilverStars in for almost a year now with no problems. You should be aight.
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Davestoaster
Scion xA/xB 1st-Gen ICE & Interior
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Jul 28, 2005 12:37 AM
50, 9006, bulb, harness, ohm, resistance, scion, silver, silverstar, silverstars, star, sylvania, tc, watt, wattage









