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Old 04-25-2012, 08:20 AM   #1 (permalink)
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04 Rancher 400FGA - diode question

Does anyone know the part number of the 2 diodes that are in the wire harness of a 2004 400 rancher fga wire harness ?
they are 2 prong - there are 2 hidden in the wraps of the harness close to the gas tank

not the one that is installed into the fuse box that is the 3 prong - i know that one is honda part # 31730-MAS-601
DIODE ASSY., THREE WAY (SUMITOMO)
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Old 04-25-2012, 03:42 PM   #2 (permalink)
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see all pictures i posted at :

diode pictures by mdec950 - Photobucket

[/IMG]http://i159.photobucket.com/albums/t129/mdec950/diode/1wireharness.jpg[/IMG]

[/IMG]http://s159.photobucket.com/albums/t129/mdec950/diode/[/IMG]

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Old 04-25-2012, 04:45 PM   #3 (permalink)
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Mdec,
Those are 10A Diodes. You can go to Radio Shack and get a 10A diode, but it won't have the nice prongs that the Honda diode has on it.
If you do get one from Radio Shack, it will need to be inserted the correct way in order for it to work. To easily figure out which way is the correct way, simply put it in one way. If it works, leave it. If it doesn't work, reverse the way you've inserted it.
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Old 04-25-2012, 04:48 PM   #4 (permalink)
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By the way, what makes you think that one of the diodes might be bad?
You can easily test them with a meter that checks for continuity.... Place the leads of the meter across the diode leads. In one direction, you should have continuity. When the leads of the meter are reversed, you should have no continuity. Simple as that.
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Old 04-25-2012, 05:22 PM   #5 (permalink)
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I tested them with a multimeter
no continuity either way
red to 1
black to 2 nothing

nor red to 2
black to 1 nothing
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Old 04-25-2012, 05:47 PM   #6 (permalink)
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radio shack

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ebay

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manual explanation of testing
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Old 04-25-2012, 07:32 PM   #7 (permalink)
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Mdec, if you have no continuity either way, then they are definately bad. Now, the question is: Why, or what damaged them? That is an important question to answer before youinstall new diodes.
The 10A Radio Shack diode that you show above should work fine. It even looks like the leads are thick enough to plug in where the Honda diodes were plugged in.
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Old 04-25-2012, 10:45 PM   #8 (permalink)
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North Little Rock Honda Yamaha Dealer of Motorcycles, ATVs, Scooter Rhinos, Big Reds, Generators. Parts, Service accessories. number 7 in this fich. part number DIODE, THREE WAY
31730-MAS-601
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Old 04-25-2012, 10:47 PM   #9 (permalink)
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Quote:
Originally Posted by shadetree View Post
#7 is the 3-way diode in the fuse box. He's looking for the 2-way diodes that plug into the wiring harness near the gas tank.
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Old 04-25-2012, 11:07 PM   #10 (permalink)
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Quote:
Originally Posted by Helmut View Post
Quote:
Originally Posted by shadetree View Post
#7 is the 3-way diode in the fuse box. He's looking for the 2-way diodes that plug into the wiring harness near the gas tank.
no others are listed for his bike ???.
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