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Update on my tail light project...

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  • #16
    Originally posted by crazy steve View Post
    Yeah, those 6 ohm resistors duplicate the load of the bright side of a 1157 lamp so that you don't need a no-load or low-load flasher. Which you have, so you shouldn't need one for every lamp.

    Now, where did you get the flasher? Except for the ones specifically designed for LEDs, all of them need some load to work as far as I know. The trick is knowing just how much they do need, which is why I suggested trying some different resistor values. You can get these at any electronics store, RadioTrash should have them. If you can go smaller, it will reduce the power used. Pretty much the same thing for the convertor; how much load does it need to work?

    As to the running/tail lights, you'll have a problem with the 'light checker' (a '79 Special-only item) that will make your oil(?) light come on if it detects a 'problem' with your taillight, that may even be true with the brake light, I'm not aware of just how that works; check the owners manual for more info (it's not in the service manual for some reason). You might be able to 'fool' it with a standard lamp in the OEM taillight and LED running lights, but if that doesn't work you'll probably have to disconnect it which may involve some rewiring.

    You might want to do the mod to the indicator light first; if you keep the OEM lamp, that's about .3 amp load and would be included with all other turn lights for your total load. And this will work whether or not you swap the other lamps in, so there's no harm done even if you decide against the other mods.

    Sure got complicated, eh?....
    Yes Sir it did prior to installing the trailer box here is the combo that I could get to work. LED's in front, LED tail/brake, Incandescent tail/turn. with this set up I had no bleed thru. So my hope is that I can add load resistors to the rear tail/turns (that are now also brake lights) to get back to a load in which it recognizes. for the Tail light/oil "Warning light" unless I run a incandescent 1157 in the main tail I'm not sure how to make this go out without unplugging the "warning" bulb thus also removing my oil pressure light. I'd like to retain this light.

    Originally posted by cywelchjr View Post
    It sounds like that "no load" flasher isn't really "no load" but rather "low load" and the load is just too low with the box in there. A higher value resistor than recommended that still saves energy would likely make it work will still allowing the box to be in there. I'm guessing that the box draws less than the LED's do.
    I got the flasher from Amazon brand called keep it clean.... it says right on it no load LED flasher. But also states it will work with up to 10 1157 bulbs
    Don
    1979 XS1100SF "Old Man" bought by my Dad brand new in 79, customized in 80 with Vetter, Standard tank, and touring seat. I inherited in 02 when Dad passed. Been riding it since 09. No resto, bike is a survivor...

    2007 RoadStar 1700 Midnight Silverado "The Black Pearl" Cobra Slash-downs, K&N filter. More mods to come


    old:
    1989 kawi ex500
    1996 yzf-r6
    1999 yzf-r1
    2001 kawi zx-6r
    2000 Ducati 748
    2002 YZF-R1
    2005 V-Star 1100 Classic

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