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Tail Light Wiring (aftermarket)

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el__burro View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote el__burro Quote  Post ReplyReply Direct Link To This Post Topic: Tail Light Wiring (aftermarket)
    Posted: 14 Jan 2019 at 16:41
Hello,
I have been going crazy trying to wire the
LED aftermarket tail light.
It comes with 3 wires
Brown = Running Light
Red = Stop Light
Black = Earth
Original diagram has only 2 wires;
Yellow = from Headlight Distributing block > Tail
Blue = from Fuse board > Switch > Tail.
I have tried all connections and fuses and it's all fine.
It works fine when I push the brake pedal but
I have no running light.
HELP!
El__burro
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ranton_rambler View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ranton_rambler Quote  Post ReplyReply Direct Link To This Post Posted: 14 Jan 2019 at 17:13
How many wires are on the bike for the tail light? I would guess that the lamp earths through the mounting, so how about using your voltmeter to work out what the existing wires do?
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 14 Jan 2019 at 17:14
According to all the diagrams I have seen, the yellow is the tail light and blue (or black) is the brake light. But I don't know exctly which model you have. The stop light wire should be connected to the stop light switch.

The original does also have the earth to the frame.
Brian.

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el__burro View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote el__burro Quote  Post ReplyReply Direct Link To This Post Posted: 14 Jan 2019 at 17:23
I have a V7 850 GT.
This is how I have wired the tail (to the diagram)
Brown > Running Light (Yellow)
Red > Stop (Blue)
Black > to good ground (frame)
Yet, it only works with the pedal pressed.
Thanks
el__burro
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el__burro View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote el__burro Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jan 2019 at 22:01
The problem is with the Yellow wire from the connectors.
With the multimeter I have realized that it carries no electricity so I plugged it in the black below (+)
It works fine, I have running light but also it feels like it interferes with the Horn.
What have you plugged on it?
Thanks
el__burro
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Post Options Post Options   Thanks (0) Thanks(0)   Quote el__burro Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jan 2019 at 23:24
1> Running light Tail
2> IGN switch
3 > TBC
4> Running Head light
5> Horn (-)
6> Horn (+)
That is how I think it is wired.

Thanks
el__burro
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jan 2019 at 08:04
What's this a picture of?

Does the original light work as it should? If so then I suspect your replacement is faulty assuming you have connected the same wires to it.

Brian.

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el__burro View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote el__burro Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jan 2019 at 08:47
That is a close up of the connectors block.
It seems like 6 is the only terminal with +.
The tail light works perfectly if i connect 1 (running tail light) to 6 Horn (+) from fuse board.
I need to figure out why it shortens the horn.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jan 2019 at 10:08
Have you looked at the wiring diags on Greg benders this old tractor 
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el__burro View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote el__burro Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jan 2019 at 11:07
Yes, i am trying to follow it, i must have wired something wrong.
i have wired the indicators that are not on the original diagram.
Can anyone help to identify what goes on the handlebar switch?
For sure number 4 is the horn switch.
thanks
el__burro

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Chris950s View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris950s Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jan 2019 at 12:21
1 is the main/dip switch
2 is lights on/off and park
3 is a terminal that connects the live (brown) wire to the headlamp main/dip switch
4 is horn

Brown = live feed
Red/grey = park lights 
Green = main beam
Green/black = dip beam
Black = horn

When the switch connects brown to contact 2 the park lights are on
When the switch connects brown to contacts 2 and 3 the headlight is on and the park lights (tail light)
When the switch connects brown to the contact to the left of 2 and the left hand contact 2 the lights are off

I hope this helps



Chris and Karen - Essex
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris950s Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jan 2019 at 12:22

This is an extract of one of my own drawings, I do not have one for your model......yet Smile


Edited by Chris950s - 16 Jan 2019 at 12:29
Chris and Karen - Essex
2011 Stelvio NTX, 1974 950S (750S replica still in bits), 1966 Triumph T100SS 52 years young this year!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris950s Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jan 2019 at 17:34
Please note that the diagram above has the main and dip wire colours switched! I have now corrected this and have drawn the 1972/74 V850 Eldorado wiring diagram
Chris and Karen - Essex
2011 Stelvio NTX, 1974 950S (750S replica still in bits), 1966 Triumph T100SS 52 years young this year!
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el__burro View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote el__burro Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan 2019 at 22:30
Getting close..
The fault is with the wiring of the light switch, since my switch is located elsewhere and I have used the handlebar one for the indicators.
I just need to make a connection from the switch to the connector block (yellow wire to tail light)
el__burro
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Post Options Post Options   Thanks (0) Thanks(0)   Quote theoneandonly Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jan 2019 at 15:43
check the light unit on a battery , it may not work properly . 
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