Aftermarket brake light not working. Need help

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03 Apr 2012 16:55 #513823 by bountyhunter
Replied by bountyhunter on topic Aftermarket brake light not working. Need help

1slowkayzee wrote: The aftermarket brake light works perfectly fine,but only when the ignition switch is in the park position. Even with the voltage deviation, the oem light is very bright when the ignition is in the normal position. Also, the voltage is low because my charging system doesn't work.

Is it possible the HIGH/LOW filaments are reversed in the new bulb?
1979 KZ-750 Twin

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03 Apr 2012 17:03 #513824 by ramtough_63
Replied by ramtough_63 on topic Aftermarket brake light not working. Need help

MFolks wrote: Is the new brake light LED or the kind with a bulb?


before you start replacing wires your stock light works fine but the new one doesn't?
if it is a standard bulb light obviously double check your wiring then take a piece of wire strip both ends like you are wiring a speaker ground one end to the engine and the other end to the light socket.

if it is an LED take that ground wire and attach it to the ground wire lead. see if you get any change.
1978 KZ1000 A2
Thrown Together To Ride Til Winter
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1982/83 750R/GPZ
1984 Goldwing 1200 Interstate
1982 Yamahopper QT50
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03 Apr 2012 17:04 #513825 by 1slowkayzee
Replied by 1slowkayzee on topic Aftermarket brake light not working. Need help
Probably not because then the bulb would be brightest before applying brake.....but then again wires are my enemy and perhaps my bike hates me.
1975 kz400
Harrisonburg, virginia

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03 Apr 2012 17:08 #513826 by 1slowkayzee
Replied by 1slowkayzee on topic Aftermarket brake light not working. Need help
Ramtough- I gave that a try and still no improvement. I have a starter issue taking priority at the moment though.
1975 kz400
Harrisonburg, virginia

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03 Apr 2012 21:25 #513881 by DiamondSkyBlue1000
Replied by DiamondSkyBlue1000 on topic Aftermarket brake light not working. Need help
You never answered the question: Is your new tail light LED or incandescent? :huh:

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04 Apr 2012 02:11 #513937 by 1slowkayzee
Replied by 1slowkayzee on topic Aftermarket brake light not working. Need help
Incandescent
1975 kz400
Harrisonburg, virginia

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04 Apr 2012 02:53 #513947 by MFolks
Replied by MFolks on topic Aftermarket brake light not working. Need help
Is the wattage the same or greater for the new brake light? The bulb should have either the watts stamped on the bulb or marked with ink. If the wattage(thats how light output is measured by the amount of power consumed)is greater than what you had, it may be dragging down the charging system.
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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04 Apr 2012 11:18 #513993 by 1slowkayzee
Replied by 1slowkayzee on topic Aftermarket brake light not working. Need help
I will check that out and let you know later today.
1975 kz400
Harrisonburg, virginia

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04 Apr 2012 21:48 #514088 by 1slowkayzee
Replied by 1slowkayzee on topic Aftermarket brake light not working. Need help
The oem bulb doesn't work in the new housing so it has something to do with how the new housing is wired/ grounded. I guess I should try different ground solutions?
1975 kz400
Harrisonburg, virginia

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04 Apr 2012 22:00 #514091 by DiamondSkyBlue1000
Replied by DiamondSkyBlue1000 on topic Aftermarket brake light not working. Need help
Give details on the new housing. Where'd you get it, who made it, is there a wiring diagram, what's the part no. of the bulb. You know, the info we need to look it up and troubleshoot it.

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04 Apr 2012 22:16 - 04 Apr 2012 22:19 #514093 by 1slowkayzee
Replied by 1slowkayzee on topic Aftermarket brake light not working. Need help
All of the information on the brake light is here: www.dimecitycycles.com/vintage-cafe-race...t-62-21512-gbpc.html

If that link doesn't work. It's a Classic style round tail light by dcc bikes. No info is provided on the website except for that it is "universal" and SKU: 62-21512-GBPC.
I also don't think that I can disassemble it without damaging something, it's held together very tight. Will call them tomorrow if I can't troubleshoot this.
1975 kz400
Harrisonburg, virginia
Last edit: 04 Apr 2012 22:19 by 1slowkayzee.

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04 Apr 2012 23:26 #514109 by MFolks
Replied by MFolks on topic Aftermarket brake light not working. Need help
If I looked correctly, there were three(3) wires going to the new brake light. I don't think the light is case grounded (could be wrong). I'd get a multimeter and start checking the wiring for continuity as it could be wired wrong....
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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