Author Topic: Installed new battery backwards and Medusa expired  (Read 987 times)

Raidercruz

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Installed new battery backwards and Medusa expired
« on: May 17, 2017, 05:02:16 PM »
Yep; I simply placed the battery with terminals facing front end which resulted  + and - switching sides.
So after I discovered huge screw up I reversed connections and of course now bike won't even acknowledge key
is switched ON.  Tell me what damage I've done and hope I didn't fry little computer or worse. Somebody who knows
please advise .....Gosh that was stupid.  Didn't here or see any electrical fireworks. Was that a lethal electrical injection?
 Raidercruz 

Medusa is back to life.
 Thanks everyone for your input.
Replaced main fuse and bike started up after a couple  of attempts. There is a tapping sound coming from underneath the battery.
When the tapping stops bike turns over and starts. Fellow Raider owner suggested checking starter relay, and I'll do that next.
Raining here in Atlanta for days so I'll get to it in a day or two. Thanks everybody.

Raidercruz/jerry
« Last Edit: May 23, 2017, 02:16:28 PM by Raidercruz »
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RoadStarRaider

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    Re: Installed new battery backwards and Medusa expired
    « Reply #1 on: May 17, 2017, 05:08:36 PM »
    I did the same thing on my Virago. You should be safe.  You probably just blew a fuse like I did. Check fuses.

    Raidercruz

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    Re: Installed new battery backwards and Medusa expired
    « Reply #2 on: May 17, 2017, 05:21:20 PM »
    Thanks Ares X......Whew  !
    Man I felt like Gomer Pyle down at the filling station.
    Goober worked on cars, Gomer just did the gas and oil.
    I will look for a fuse  but never have searched for a fuse box?
    Can you extrapolate , Sir?
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      t84a

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      Re: Installed new battery backwards and Medusa expired
      « Reply #3 on: May 17, 2017, 06:02:21 PM »
      Check #10
      Ken
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      Re: Installed new battery backwards and Medusa expired
      « Reply #4 on: May 17, 2017, 06:11:00 PM »
      Hopefully you only blew a fuse - you might have damaged the starter relay also but hopefully not

      69quadracer

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      Re: Installed new battery backwards and Medusa expired
      « Reply #5 on: May 17, 2017, 07:05:11 PM »
      Probably the big main fuse over on the left side of the battery box just below the frame rail

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      Re: Installed new battery backwards and Medusa expired
      « Reply #6 on: May 18, 2017, 07:00:42 AM »
      Yep, pretty sure a fuse is going to go before any serious damage is done.  Good luck.

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      Re: Installed new battery backwards and Medusa expired
      « Reply #7 on: May 18, 2017, 11:06:48 AM »
      Probably the big main fuse over on the left side of the battery box just below the frame rail

      That would be my guess.  The sad thing is I visually checked to see if my fuses were blown and they all looked fine. My dad came over and first thing he does is start putting a meter on the fuses and what looked to be good was not. It took him literally about 5 minutes to find my problem.

      sundancer87

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      Re: Installed new battery backwards and Medusa expired
      « Reply #8 on: May 18, 2017, 11:55:19 AM »
      Hopefully you only blew a fuse - you might have damaged the starter relay also but hopefully not

      The starter relay has a coil and that coil doesn't care what the polarity is or was.  If the main fuse gave up the ghost the starter circuit never was energized so therefore the probability of damage was nil.

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      Re: Installed new battery backwards and Medusa expired
      « Reply #9 on: May 18, 2017, 12:51:30 PM »
      Hopefully you only blew a fuse - you might have damaged the starter relay also but hopefully not

      The starter relay has a coil and that coil doesn't care what the polarity is or was.  If the main fuse gave up the ghost the starter circuit never was energized so therefore the probability of damage was nil.

      Isn't that what the fuses are for... to protect the important/expensive components.

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      Re: Installed new battery backwards and Medusa expired
      « Reply #10 on: May 18, 2017, 01:43:56 PM »
      Hopefully you only blew a fuse - you might have damaged the starter relay also but hopefully not

      The starter relay has a coil and that coil doesn't care what the polarity is or was.  If the main fuse gave up the ghost the starter circuit never was energized so therefore the probability of damage was nil.

      Isn't that what the fuses are for... to protect the important/expensive components.

      Yep but freaky things can happen and it is possible to fry a part without blowing the fuse.  Extremely rare but it can happen.

      kphudson

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      Re: Installed new battery backwards and Medusa expired
      « Reply #11 on: May 18, 2017, 03:33:03 PM »
      Hopefully you only blew a fuse - you might have damaged the starter relay also but hopefully not

      The starter relay has a coil and that coil doesn't care what the polarity is or was.  If the main fuse gave up the ghost the starter circuit never was energized so therefore the probability of damage was nil.

      Isn't that what the fuses are for... to protect the important/expensive components.

      Yep but freaky things can happen and it is possible to fry a part without blowing the fuse.  Extremely rare but it can happen.

      Fuses don't recognize polarity. That would be my concern.
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      Re: Installed new battery backwards and Medusa expired
      « Reply #12 on: May 18, 2017, 11:01:01 PM »
      If I remember correctly fuses and relays are polarity sensenitve just voltage.  But regulators and statorshave been known to go or just not work if polarity gets reversed.
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      Re: Installed new battery backwards and Medusa expired
      « Reply #13 on: May 19, 2017, 10:40:55 AM »
      raidercruz- So what ended up happening?  Was it just a fuse?

      sundancer87

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      Re: Installed new battery backwards and Medusa expired
      « Reply #14 on: May 19, 2017, 02:06:18 PM »
      If I remember correctly fuses and relays are polarity sensenitve just voltage.  But regulators and statorshave been known to go or just not work if polarity gets reversed.

      A relay is nothing more than a coil of wire with contacts and an actuating core.   There is a voltage range where they will operate but calling it 'sensitive' is a little much.

      A fuse is sensitive to amperage or current draw.  Voltage is hardly a factor.  Fuses are purchased based on amps and for the most part are rated at 600 volts.