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Electric

Discussion in 'Motorcycle Tech Talk' started by 59 hog, Aug 26, 2009.

  1. 59 hog

    59 hog New Member

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    hey guys have a late 84 evo flht that i am attepting to put back together. working on the electrcal stuff, i have 12 v at batt 12v at top bolt on solenoid but nothin at the starter. where do i go next, yes i have my sm any ideas?
  2. chucktx

    chucktx Moderator Staff Member

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    if the solonoid is engaging the disc in the solonoid may be bad....also check your grounds!!! if the frame was just painted or powdercoated you need to scrape to bare metal to get a good ground.....
  3. cowboy

    cowboy Moderator Staff Member

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    What chuck said .plus double check the wireing for any loose/broken connections
  4. hotroadking

    hotroadking Super Moderator Staff Member

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    I presume when you say you have no voltage at the starter do you mean the green wire that connects to the starter?

    If so, take a short wire from the positive on the battery and jumper to the post where the green wire connects, if the starter engages you have issues of power getting to the starter from the green wire which runs from the start button to the starter.

    Best way is to energize the system, take a M. First check to see if you have power at the tip of the green wire, if not work back from the connection where power should be to the switch, to the harness, to the ignition, to fuses to battery.. You'll find the problem that way, could be broken wire, could be bad switch could be in the wires at the switch connector if you got one in the wrong pin position..



    I would check the grounds as chuck said and any going to frame need star washers to dig into the powdercoat, or you can scrape a bit away..
  5. 59 hog

    59 hog New Member

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    hotroadking, do you mean the solenoid? I have only one wire to starter. If you mean the solenoid, I have a tan wire to starter button. No green. Also I have no voltage at the key switch. All switches and wiring for handle bar controls are new and came preassembled. I have checked and double checked the gnd. it is good. Batt has full charge and good under load. This bike sat for 10 years before I got it. Is there a way to test the key switch? Should I have power there first? I have no clue so I hope these questions don't sound too stupid.Thanks again to all those that help. I sometimes wonder if I'd be able to complete this project without the help of the people of this site. Thanks again
  6. 59 hog

    59 hog New Member

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    hotroadking, do you mean the solenoid? I have only one wire to starter. If you mean the solenoid, I have a tan wire to starter button. No green. Also I have no voltage at the key switch. All switches and wiring for handle bar controls are new and came preassembled. I have checked and double checked the gnd. it is good. Batt has full charge and good under load. This bike sat for 10 years before I got it. Is there a way to test the key switch? Should I have power there first? I have no clue so I hope these questions don't sound too stupid.:confused:Thanks again to all those that help. I sometimes wonder if I'd be able to complete this project without the help of the people of this site. Thanks again:)
  7. 59 hog

    59 hog New Member

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    how did I do that?
  8. cowboy

    cowboy Moderator Staff Member

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    59Hog you can test the switch with A volt meter , Take all wires off turn meter to omhs ,now I'am trying to remeber ,if the needle moves you have a good switch , if not it's bad , I think that's the right way, someone will let know If I have it backwords
  9. hotroadking

    hotroadking Super Moderator Staff Member

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    I haven't messed with an 84 but I'll just take the basics as I've had to mess with on later evo's

    On the 98, the starter has a wire coming from the positive side of the battery, the ground wire should be duals, one to the frame, one to the starter bolt to the primary.

    Be sure the grounds are getting good contact, if you have the older style single ground, you might consider getting a second ground wire, run from the battery to the frame, then from the same frame post to the starter mounting bolt. Tends to help.

    On the top end of the starter is the wire coming from the starter button, on most later HD's it's green, it could be brown, but it plugs into the side of the starter. When you switch on the ignition, click the run, then press the start you should get 12v at that wire. If not you're not getting power to the system somewhere.

    I would start with the ignition, if dash mounted, turn over the console, three wires, one is a feed, pull the connector off and check for power, if you have none, start there and work back to the main fuses and relays looking for a broken connection.

    You also might have a bad switch, if you have power on the main harness connection to the switch then turn on the switch and with you meter check for power on the output side of the switch, no power, bad switch... (provided you know you have good power coming in.

    Start there, get the SM out with the wire diagram and work out from the battery,

    Battery to main breaker - check power, breaker to fuse box, check each connection wit the meter in order using the SM diagram and work your way out...

    Electrics are not hard, but there is a lot to check just take your time with a cigar, a multi meter and a beer...
  10. 59 hog

    59 hog New Member

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    hey guys, followed your advice and was able to fix the problem. The power wire to the key switch was broken. Replaced the wire and now I have power :D I can't say this enough, THANKS for your help

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