Fire


Information and questions on GL1200 Goldwings (1984-1987)
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pointpounder
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Location: Farmington, NM
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Fire

Postby pointpounder » Mon May 13, 2013 2:53 pm



I do not know if this is the cause but. I have installed the poor boy alt. kit about a year ago. been working just fine. yesterday I smelled smoke when riding, stop and saw flames under the seat. Put the fire out took the seat off and found a small square black component on the wiring harness had burned up. Honda guy said that the alt. was the cause. Now I have to figure out how to connect the replacment. Any thoughts on this?



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thrasherg
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Re: Fire

Postby thrasherg » Mon May 13, 2013 3:22 pm

I think you need to tell us what the small square black box was!! A correctly installed poor boy, should not cause any problems for a wing wiring system (if all the wiring is in good condition).

Gary

pointpounder
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Location: Farmington, NM
Motorcycle: 87 interstate

Re: Fire

Postby pointpounder » Mon May 13, 2013 3:29 pm

It has been work just fine. The part was a dieode.

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thrasherg
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Re: Fire

Postby thrasherg » Mon May 13, 2013 4:24 pm

But there is no diode in the goldwing charging system, especially with the poor boy conversion, the rectifier and regulator are built into the alternator, so what did the diode connect between? I really can't see this being due to the poorboy conversion.. i think the shop has seen the conversion and is just pointing to it as a cause because its an obvious modification. If you can tell us what circuitry the diode is connected to, we can try and suggest causes. There are some diodes used to control the starter motor (So it will only operate when the bike is in neutral or the clutch is pulled in, etc.. Tell us which diode it is, or maybe someone on this site can tell us what diodes are located under the seat of a 1200 and we can suggest possible causes..

Gary

pointpounder
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Joined: Tue Aug 14, 2012 3:23 pm
Location: Farmington, NM
Motorcycle: 87 interstate

Re: Fire

Postby pointpounder » Mon May 13, 2013 4:34 pm

If you remove the seat there is a frame cross member about in the center of the bike that the wiring harness pass under the small rectangle 1" x 3/4 is right there it had two push on connectors.

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thrasherg
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Re: Fire

Postby thrasherg » Mon May 13, 2013 4:38 pm

I don't have a 1200, so I am hoping that someone else on this forum can tell us what the diode is (Based on your description of its location) connected too, then we can start suggesting checks and possible causes for the problem.

Gary

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SteveB123
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Location: Winchester, Ontario, Canada
Motorcycle: 1982 1100I, 60A Poorboy, MSD coil

Re: Fire

Postby SteveB123 » Mon May 13, 2013 5:39 pm

pointpounder wrote:If you remove the seat there is a frame cross member about in the center of the bike that the wiring harness pass under the small rectangle 1" x 3/4 is right there it had two push on connectors.


Uh.....starter solenoid?
Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
Previous: 93 GSX1100F Katana
82 GL500 Silverwing

pointpounder
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Joined: Tue Aug 14, 2012 3:23 pm
Location: Farmington, NM
Motorcycle: 87 interstate

Re: Fire

Postby pointpounder » Mon May 13, 2013 5:47 pm

At the honda shop they called up the part on the computer and it a dieode.

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SteveB123
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Re: Fire

Postby SteveB123 » Mon May 13, 2013 6:17 pm

Best to post up a pic.
Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
Previous: 93 GSX1100F Katana
82 GL500 Silverwing

pointpounder
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Joined: Tue Aug 14, 2012 3:23 pm
Location: Farmington, NM
Motorcycle: 87 interstate

Re: Fire

Postby pointpounder » Tue May 14, 2013 7:15 am

On the slip they are calling it a rectifier. Working on pic of where it gos. There is nothing left of it.

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virgilmobile
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Re: Fire

Postby virgilmobile » Tue May 14, 2013 11:41 am

If it is the start diode/rectifier...remove it.
If its the starter diode,you would be able to crank the bike with the clutch pulled in only.It will not crank in neutral.
Replace the diode and test the neutral crank.If installed backward,it wont crank in neutral...reverse the diode.
By the way,any heavy duty diode will work.its just a 5 amp silicone diode.It just has to pass the current to energize the start solenoid.

What i wonder is why it smoked.The only time any current is suppose to be on that part is during cranking the engine.
Even a defective diode won't smoke in the normal wiring.
I'd really be looking for another problem.The smoked diode is the result,not the cause.
I just can't think of any reason it would smoke.Even the conversion can't affect it.

Another mystery....how cool.

pointpounder
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Joined: Tue Aug 14, 2012 3:23 pm
Location: Farmington, NM
Motorcycle: 87 interstate

Re: Fire

Postby pointpounder » Tue May 14, 2013 12:08 pm

Thanks for the feed back. However The wires are melted. Which gos where? I can match them one side to another but one has to have connections in and out of the rectifier. Can anyone take a peek at theirs and give me a color?

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virgilmobile
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83 GL1100 I
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84 GL 1200 I

Re: Fire

Postby virgilmobile » Tue May 14, 2013 12:33 pm

I'll pull the schematic...I'll post in a minute or so.

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virgilmobile
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83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Fire

Postby virgilmobile » Tue May 14, 2013 12:44 pm

Here ya go...I hope it answers your questions of it's location and wiring....

pointpounder
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Joined: Tue Aug 14, 2012 3:23 pm
Location: Farmington, NM
Motorcycle: 87 interstate

Re: Fire

Postby pointpounder » Tue May 14, 2013 12:52 pm

At the bottom of the picture the arrow points to the rectifier the wire on the right is marked G/R the on the left I can not make out. something/R. Thanks for your help!

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virgilmobile
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Previously owned
78 GL1000
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82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Fire

Postby virgilmobile » Tue May 14, 2013 1:29 pm

G/R is green/red. Lg/R is light green/red.

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virgilmobile
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Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Fire

Postby virgilmobile » Tue May 14, 2013 1:33 pm

Just so you know...the Lg/R wire will show volts when in gear(key on) and show a short to ground when in neutral.
The G/R can have volts on it ONLY when in gear,clutch released and start button pushed.

pointpounder
Posts: 18
Joined: Tue Aug 14, 2012 3:23 pm
Location: Farmington, NM
Motorcycle: 87 interstate

Re: Fire

Postby pointpounder » Tue May 14, 2013 1:38 pm

Will let you know how it gos. Thanks.

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thrasherg
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Re: Fire

Postby thrasherg » Tue May 14, 2013 1:53 pm

As stated, if that is the diode that failed, you need to find the cause, no way did the poor boy conversion cause this failure, you must have a short in the wiring somewhere, as stated not much current should normally be flowing through the diode, so to melt the wires and cause a fire, you have a short in the wiring somewhere, find it before you replace the diode, or the same thing will just happen again!!

Gary




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