Results 1 to 7 of 7

Thread: Help! - Chasing electrons in circles

  1. #1
    Subzero Scooter Idiot oldcarkook's Avatar
    Join Date
    Jun 2003
    Location
    New England
    Posts
    273

    Help! - Chasing electrons in circles

    I have a pair of PIAA 80 driving lights on my '96 R1100RT and they blinked off last week. I mean poof, not working. The switch still has power and sends power to the relay, but no power to the lights. I am assuming that the relay is shot, but am wondering if anyone else has had a light relay fail on these high intensity driving lights?
    Experience is the comb that mother nature gives us when we are bald

  2. #2
    Focused kbasa's Avatar
    Join Date
    Mar 2003
    Location
    Marin By God County, California
    Posts
    11,639
    If you've got power to the relay, but nothing coming out, it may be the relay. You may also want to check the ground for the relay actuator.
    Dave Swider
    Marin County, CA

    Some bikes. Some with motors, some without.

  3. #3
    Registered User
    Join Date
    Jun 2003
    Location
    F-V, NC
    Posts
    60
    Was it possible to turn on the lights with the engine off? If so, do that and listen for the relay to pull in and drop out when you turn them off. There should be a distinctive click from it.

    You said that voltage is reaching the relay; did you measure at the pin for the coil and output contact(s)?

    Also, someone had posted on the K board a few months ago about a relay dying from condensation forming inside of it.
    '88 K100RS ABS

  4. #4
    Subzero Scooter Idiot oldcarkook's Avatar
    Join Date
    Jun 2003
    Location
    New England
    Posts
    273
    It will not spark up the lights under any conditions. I have not yet started pulling off tupperware to get at the relay, but I can hear it clicking when the switch is activated. I am working on the assumption that the relay is the likely culprit, but once I have it all exposed, I'll know a lot more. I was turning wrenches until 1:30 AM on vintage stuff last night and that brought me to the machine shop today for some work on the parts I removed so I'll be diving into the bike tomorrow night I hope and will report anything I find that doesn't add up. Thanks for the great and insightful responses. Sharing knowledge is what it's all about. Thanks gang.
    Experience is the comb that mother nature gives us when we are bald

  5. #5
    Curmudgeon At Large Bobmws's Avatar
    Join Date
    Mar 2003
    Location
    Astatula, FL
    Posts
    1,134
    Is the power to the relay fused? If not, why not?! Have you checked the fuse?
    Bob Weis
    '04 K12RS - Hannigan Hack
    www.earplugco.com

  6. #6
    Registered User
    Join Date
    Jun 2003
    Location
    F-V, NC
    Posts
    60
    If you can here the relay clicking, it is most likely okay. You could have lost a wire from the relay to the lights. If you have the lights fused, they could be bad without affecting the relay.

    Here is a picture of what you most likely have/want:



    With the switch off, you should read 12V at one terminal of the relay--one side of the NO contact. If you don't have 12V here, and have a fuse, it is the fuse.

    With the switch on, you should read 12V at three terminals of the relay--both sides of the NO contact and the coil.
    '88 K100RS ABS

  7. #7
    Subzero Scooter Idiot oldcarkook's Avatar
    Join Date
    Jun 2003
    Location
    New England
    Posts
    273
    Sorry gang, been WAY behind on my reading. I have still not yet gotten into this or even ridden the bike in nearly a month. Been busier than a one legged man in an ass kickin' contest with work and it seems the bike has been parked too long. I have power in and out of the switch, and no power at the lights at all. I have not yet pulled off all tupperware to get at the harness and the relay to see what I have there. PIAA has agreed to (actually offered unsolicited) to warranty the relay and all I need to do is give them the number off of it. That would lead me to think that maybe this is not the first time this has happened. Hope to dive into this some on Saturday. FINALLY got some time opening up.
    Experience is the comb that mother nature gives us when we are bald

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •