need help translating (or explain what it means)

[xt550]

My bikes electrical system is a mess right now so im looking at a wiring diagram and found a thing called "reed switch" i know about reed and 2-strokes and my dictionary is translating it as "grass close to, or in water", but nothing of those make any sense to me.
Can someone please give me a hint about what it is?

[the fan]

start here:

http://en.wikipedia.org/wiki/Reed_switch

Wikipedia can be viewed in several languages. I found it useful when working at a german owned company and french engineers...

[SlowOldGuy]

The only place I recall a reed switch being used on the FJ is in the automatic turn signal cancellation circuit of the early models.  Why did they discontinue this?

DavidR.

[xt550]

Thank you for the link!

Does anyone have any idea what a "electrical switch operated by an applied magnetic field" is doing up in my speedometer surroundings, and are some how mixed up in the starting circuit? 

[racerman_27410]

Thank you for the link!

Does anyone have any idea what a "electrical switch operated by an applied magnetic field" is doing up in my speedometer surroundings, and are some how mixed up in the starting circuit? 

"electrical switch operated by an applied magnetic field"      is fancy speak for a relay.

there isnt one inside the speedo cluster.

[Arnie]

Reed switches are wonderful devices.  Usually they are a couple of thin leaves of metal contained within a glass tube.  When a magnet comes in close proximity they either open or close (2 separate types).  Most common use is probably in alarm systems where when a door or window is opened, the magnet moves away from the reed switch and the contacts close.
Yamaha used a reed switch within the speedo to count distance as one of the parameters to cancel the turn signal.  Shame they no longer have this.
A relay is similiar, but usually the contacts are moved by an electrically induced magnetic field.

Cheers,
Arnie

[xt550]

Case closed!
Thank you, no i see the light!

[Pat Conlon]

Hello David, been thinking about you. Sending out good thoughts your way.
I understand it that around '85/86 several lawsuits were filed against Yamaha for accidents (presumably) caused when the auto cancellation unit malfunctioned and the turn signals were left on.
Therefore, for liability reasons Yamaha dropped the feature from their entire line of motorcycles, inc. FJ's.

I've always wondered, does anyone know if any other m/c company has a auto cancellation feature on turn signals after '85/86?

I really enjoy the auto cancellation feature on my '84.  I have to remember to shut off my signals when I ride my '92.

Pat Conlon, Palm Desert, Ca. (a cool, balmy, 115*)

The only place I recall a reed switch being used on the FJ is in the automatic turn signal cancellation circuit of the early models.  Why did they discontinue this?

DavidR.

[RichBaker]

My 90 has the auto-cancel, it works pretty well... The 78 XS500, not so well. I can't think of any other bikes I've owned or ridden that had it.

[Pat Conlon]

Hey Rich, I didn't know the 2nd gen FJ's ('86-90) had auto cancel...Pat

My 90 has the auto-cancel, it works pretty well... The 78 XS500, not so well. I can't think of any other bikes I've owned or ridden that had it.

[Marsh White]

Yep they do...so does my 89.  But the 3rd Gen's do not have it.

[xt550]

Iwe been reading allot of electrical wiring diagrams an what i found is that 86 87 has the same relay 88 has a similar but not exactly the same,it's a combined turn signal, automatic turn signal cancellation and starter circuit cut-off relay, from  89 onwards there is a completely other relay (2 separate in fact).
I have made a little gif about the 86 87 starter relay part function of the relay.
Since im from Sweden i  would like someone to check and correct any "Swinglish" and maby tune up the graphic and put it in the forum.

[RichBaker]

Yep they do...so does my 89.  But the 3rd Gen's do not have it.

4th gen doesn't have it....  1st Gen is 84, 85; 2nd Gen 86, 87; 3rd Gen 88-90; 4th Gen 91 and newer....