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Thread: fuel sender and damping unit

  1. #16
    aapasquale
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    do have meter

    Quote Originally Posted by rxcrider View Post
    Have a multimeter or test light and a jumper?

    With the relay unplugged, you should NOT have continuity between the terminal (on the relay) where the white / green wire connects and the terminal (on the relay) where the brown wire connects. If you can't see the wires, maybe GSAddict can provide details again. If not, I can pull my spare harness and relay box to figure out what you need to probe.
    yes, I do have a multimeter--I will look more closely and see what I can see
    Tony

  2. #17
    aapasquale
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    hi

    Quote Originally Posted by GSAddict View Post
    my fuel level light has been on all the time for a few months--today I removed the fuel pump/level sender from the tank--four wires: brown, green, yellow white (in order)--I'm trying to figure out which is the fuel sender wire--am I correct in assuming brown is ground?--Brown is Ground

    couple more questions:
    --is it okay to turn key to on(not to start position) without the tank/fuel pump/sender unit connected? I want to see if level light on dashboard is on or off when sender is disconnected Yes
    --in the wiring schematics there is a damping unit--where is it located on the bike? In the fuse box
    --is it possible for this damping unit to fail? if it does, how does this failure present itself? Rare I have never seen one fail


    Low fuel lamp lights when the float arm drops low enough to close the circuit on one side of the sender board, the damper relay stops nuisance flashing of the light due to sloshing fuel.
    Fuel level damping is done internally in the RID display unit.
    Level switch is on or off. Brown to White
    Sender board resistance range is approx. 2 ohms (full tank) to approx 85 ohms (empty tank) Brown to Yellow
    Be sure to carefully clean the sender board with a Qtip soaked in electrical contact cleaner, deposits from fuel will affect fuel gauge readings eventually causing it to read low.
    Thanks for the information--one question does remain, however--if this relay does fail, how does this failure present itself?
    Tony

  3. #18
    Pepperfool GSAddict's Avatar
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    Quote Originally Posted by aapasquale View Post
    Thanks for the information--one question does remain, however--if this relay does fail, how does this failure present itself?
    Tony
    I can only assume (never having seen one fail) that the damping timer would either fail open or closed. Both possibilities are possible.
    '
    Ufda happens..........

    It's all about the details.

  4. #19
    aapasquale
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    Quote Originally Posted by GSAddict View Post
    I can only assume (never having seen one fail) that the damping timer would either fail open or closed. Both possibilities are possible.
    if it does fail open, what happens--if it fails closed, likewise...?

  5. #20
    Pepperfool GSAddict's Avatar
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    Quote Originally Posted by aapasquale View Post
    if it does fail open, what happens--if it fails closed, likewise...?
    Well, Failed open would mean no light - ever
    Failed closed would mean the light would be on all the time.
    Both states would be regardless of input status.
    '
    Ufda happens..........

    It's all about the details.

  6. #21
    aapasquale
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    thanks for your reply

    thank you all for this information--the whole process has been an education--am looking forward (GSAAddict) to getting the relay you sent--hope it solves the problem--all the best to you all!!!!

  7. #22
    aapasquale
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    hooray

    Quote Originally Posted by GSAddict View Post
    I have a Damper relay if you happen to need one.
    Good news!
    got your used damper relay in the mail today--the light is out and the sending unit is working properly--thanks for all the help

  8. #23
    Day Dreaming ... happy wanderer's Avatar
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    Bump and a shout out to GSAddict for solving this problem and helping out another member.
    Gotta love the MOA forum.

    Nice one!
    MJM - BeeCeeBeemers Motorcycle Club Vancouver B.C.
    '81 R80G/S, '82 R100RS, '00 R1100RT

  9. #24
    Pepperfool GSAddict's Avatar
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    Quote Originally Posted by aapasquale View Post
    Good news!
    got your used damper relay in the mail today--the light is out and the sending unit is working properly--thanks for all the help
    I love happy endings!
    '
    Ufda happens..........

    It's all about the details.

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