Converting to LED's question
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Road Master
Joined: Aug 2007
Posts: 848
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Converting to LED's question
I have a question that has me stumped.
I have a 1990 FLHTCU. I have 3 1157 bulbs in the rear. 2 in the tour pack and 1in the fender tail light. I replaced the 2 in the tour pack with LED versions of the 1157.
They work fine. When I replace the 1157 in the fender tail light only the brake works on the LED. Its dark until I step on the brake which means one of the filaments (and pins on the end of the bulb socket) isn't working or getting power.
I pull the new LED and check it. It works fine. If I touch one of the pins the LED's come on and if I touch the other they get brighter.
I then put the original 1157 in the bike and it works fine.
So.. I assume I have a bad LED. I try another one. Same deal. Running light doesn't work. Brake light does.
Any ideas??
I have a 1990 FLHTCU. I have 3 1157 bulbs in the rear. 2 in the tour pack and 1in the fender tail light. I replaced the 2 in the tour pack with LED versions of the 1157.
They work fine. When I replace the 1157 in the fender tail light only the brake works on the LED. Its dark until I step on the brake which means one of the filaments (and pins on the end of the bulb socket) isn't working or getting power.
I pull the new LED and check it. It works fine. If I touch one of the pins the LED's come on and if I touch the other they get brighter.
I then put the original 1157 in the bike and it works fine.
So.. I assume I have a bad LED. I try another one. Same deal. Running light doesn't work. Brake light does.
Any ideas??
Road Warrior
Joined: Jan 2010
Posts: 1,644
Likes: 32
From: Canton, Ohio
x2, Found that out with our trucks. Also, on some newer vehicles without the resistor packs the cruise control won't work with LEDs
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Road Master
Joined: Aug 2007
Posts: 848
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I don't understand that. If I am correct, the load resistors balance the voltage or amperage so that things like flashers or indicators work properly. Since an 1157 LED bulb draws much less current than a traditional 1157 incandecent bulb, why wouldn't it work. Its just a brake light. My Ultra has 3 brake lights. 2 in the tour pack, 1 in the fender.
Road Warrior
Joined: Jan 2010
Posts: 1,644
Likes: 32
From: Canton, Ohio
I don't understand that. If I am correct, the load resistors balance the voltage or amperage so that things like flashers or indicators work properly. Since an 1157 LED bulb draws much less current than a traditional 1157 incandecent bulb, why wouldn't it work. Its just a brake light. My Ultra has 3 brake lights. 2 in the tour pack, 1 in the fender.
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