|
I'm trying to figure out how much draw the LEDs actually have on some of these bulbs. its hard because the rating is not given.
A normal 5mm LED is generally 20-30ma. the large 10mm are up to 50ma. So if the "superbrights" are the 50ma type, a 20 LED-bulb goes to 1amp @ 12 volts which is 12 watts...the current 3175 bulbs are 8watts. So some of these could actually be increase electrical consumption!
I'll spill a few more details as to why I'm interested:
My subaru has FOUR 3175 bulbs @ 8W (without braking) plus the two plate lights @ 5W a piece. When I hit the brakes the wattage goes up to 27 on two of the 3175 bulbs. this is not including the third brake light. Quite seriously if I have blinker and and use the brakes (common to slow while turning) the load put on the car is near 100W from brake lights and blinkers. This would include times while sitting at traffic lights. When I'm in traffic in the morning during cold commute this actually causes the low beams to dim and the idle to creep up. Part of the reason I would like to swap to the LEDs as I hit ~10 stops on the commuting path. I probably spending up wards of 8 minutes daily sitting idle with the a 100w load on the alternator at idle.
__________________
|