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Night Trains Tech Tip of the week

Discussion in 'Technical' started by Night Train, Feb 27, 2009.

  1. stiffy

    stiffy Member

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    Night Train, I think my Thunder Heart is giving up the ghost. My flashers stopped working and I've had some other intermittent issues with my bike. I pulled the TH controller and put 12 volts through the harness to the flashers. Everything lit up. I've had the motor just kill for no reason. Looking at the controller, some of the solders look discolored. It sounds like the 4250 is pretty reliable.
    Question 1 - would you replace with the same controller?
    Question 2 - I saw somewhere here that somebody bought one for $185. Can you tell me where I can get the best deal?
    Question 3 - Is there a good and inexpensive way to bypass the controller for the flashers?

    Thanks!
     
  2. Mojo

    Mojo Member

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    1.5% failure rate? That doesn't seem bad enough to justify replacing the entire electrical system. Did you have anything to do with the routing of the wiring, or the exposed connectors all over the bikes?:confused: Most of the problems I have encountered when dealing with electrical issues on a big dog are a result of damaged wiring (rubbing on something), corrossion at connectors, or someone doing shadetree wiring.:job: I make it a habbit whenever I'm in there to not only add dielectric grease, but HEAT SHRINK!:bang: I'm no engineer, but I think that a little waterproofing can go a long way. My customers don't get stranded in the rain.:whoop:
     
  3. TheDeadOne

    TheDeadOne Banned

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    I would like to make a proposal that we make MoJo an Honorary Engineer regarding the BDM electrical systems!

    All in favor? Yea! :flag::D:whoop::cheers::2thumbs::hi::up::):yesnod::iagree:

    All opposed?........

    The Yeas have it! "Welcome New Engineer MoJo"!

    :loony::crazy::smash::lol::roll::D

    dead :2thumbs::cheers:
     
  4. Mojo

    Mojo Member

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    That's the cool thing about engineers. They dissect everything on their computers until it looks good on paper, baffle you with bs, and try to sell you something better. We're talking motorcycles here, not rocket science. They're easy if you keep it simple. If you don't understand them, take it to someone who does.
     
  5. Eric

    Eric Banned

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    mo jo how about a intro.. we always need electrical advice..
     
  6. TheDeadOne

    TheDeadOne Banned

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    MoJo's first wise words of wisdom and first lesson in basic electrical engineering 101; "K.I.S.S. = Keep It Simple Stupid"! :D:lol:

    :2thumbs:

    :cheers:
     
  7. Mojo

    Mojo Member

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    Wouldn't it be easier before doing all of that to look at the EHC when pushing the turn signal button? :rolleyes:If an LED lights up on the EHC when a turn signal button is pushed, wouldn't that mean that there is an input from the switch and the problem is on the outbound side? Are you saying that there is wiring that is under rated for the voltage going through it on big dogs, and if so which one's?

    BTW- what is an ECH? Engineer Creating Headaches?:loony:
     
  8. Chopper117

    Chopper117 Chopper Nutt

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    I agree with MOJO and DEAD!! :cheers: I feel much more SAFE with my connectors Diaelectric Greased and Shrinked Wrapped!!:2thumbs: Thanks for the inspiration DEAD! No problems here!!:2thumbs:
     
  9. TheDeadOne

    TheDeadOne Banned

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    ECH is close, but it's an EHC!

    EHC = "Everyone's Horrible Crap"! :down:

    :D:cheers:
     
  10. BigDogBro1

    BigDogBro1 Made in the USA

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  11. DemonK9

    DemonK9 Active Member

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    i must be that 1.5 then, I own 2007 K-9 and it sucks. i am having problems RIGHT now, and now am being told 300 for new computer, and put that shit in there again....NO. or rewire....THis is bullshit.
     
  12. Derek m

    Derek m Member

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    I just installed a new wire plus kit that I got from Jake. It was pretty painless with his directions(Thanks for those Jake). I am not an engineer and was able to do it myself. If you want to get rid of the ehc contact Jake, he knows what you need!
     
  13. born to ride

    born to ride New Member

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    Hello Mike, my name is Fred (born to ride) and have read some of your posts. I have recently purchased a 2005 BD Chopper. 3200 miles run great except once in a while as crusing it shuts down completely. Roll to side of road, turn key off and back on, fires right up-so far. So you wp upgrade and a new outfit Kansas MC that offers plug and play harness. So WP comes with new module but the Kansas outfit appears to only have harness. With that thought the big dog module must be ok and the real issue is the wire harness. Any thoughts, Thanks, Fred
     
  14. Jwooky

    Jwooky Well-Known Member

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    This is a 3yr old thread. Suggest you review more modern info.
     
  15. BigDogBro1

    BigDogBro1 Made in the USA

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    Fred,

    The KS kit does come with a new controller.

    Search for EHC problems, dielectric grease in the forum for possible EHC fixes.
    I think Wild Steed Works a vendor here on the forum might be able to test that EHC.
     
  16. KaptinAmerika

    KaptinAmerika Well-Known Member

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    Sounds like you may have a bad key switch.
    Disconnect the JST connector to the key switch under the coil cover.
    Jumper the connector, its a low voltage ground signal only so nothing to stress over, ride the bike that way.
    If it doesn't shut down again then you have a bad key switch. Many on the forum have had great success with a ford tractor switch.


     

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