Wiring curiousity.. FZ750

[A100man]

Hi All

I'm trying to trace an electrical issue as pressing the start button on the FZ no longer turns the motor over.. It should short the relay input ( a blue/white wire) to gnd/earth completing the circuit and activating the relay. I've eliminated the relay by connecting the input to gnd directly. and the motor then spins

The switch/button appears to be Ok as on pressing it the OIL warning light comes on as it should.

The interesting bit is that the blue/white wire also appears to pass through a box of tricks called the ' Turn Signal Relay' which sure enough feed the indicators.
I can't for the life of me though, see why the starter signal should be needed for this 'relay'

My concern is that the starter signal is compromised as it passes through this part.

Any thoughts?
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Now: A100, GT250A, XJ598, FZ750

Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600

[Nobby the Bastard]

Oh god, you're opening a box full of cats there.

In the speedo is a switch that measures changes to speed. It's on the wiring diagram and I think its called a reed switch. This, combined with the madness that is the indicator relay, was meant to make the indicators self cancelling to an extent.

It didn't really work and its a known issue with fzs failing to start. Look for corrosion on the connector block.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[oilyrag]

Have you got a link for the correct workshop manual?

[Nobby the Bastard]

Corrosion on the relay, not the switch in the speedo.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[A100man]

[Nobby the Bastard]

I don't know much about the internal wiring of the relay but I do know that the ignition is routed though it and it can be a problem. Katy probably knows more about the issue than I do. It wasn't an issue on mine but it was on other peoples and was usualy associated with corrosion on the connector block for the relay.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[Easy-X]

I know this is a bit clichéd but it's not something like a sidestand, neutral or clutch switch? Looks like blue & white also goes into some clever* arrangement of diodes, if I'm looking at the right diagram...

*as in "it seemed like a good idea at the time"
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[ThatDippyTwat]

Reed switch? They're magnetically activated. Like a relay without the electromagnet part. Can be NO or NC like a relay. Sounds like a lot of fuckery.
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'98 VFR800 (touring) - '12 VFR800 Crosrunner (Commuting) - '01 KDX220 (Big Green Antisocial Machine)

[Nobby the Bastard]

[Easy-X]

Are we talking an actual "reed switch?" As dippy says you'd need a magnet to affect it. Or is it a mercury tilt switch? That would make more sense for self-cancelling. Anyhoo, sounds like the sort of twattery only a Harley rider would need
____________________
Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[Nobby the Bastard]

[A100man]

[ThatDippyTwat]

[Nobby the Bastard]

The Reed switch is in the speedo. I have said this a couple of times now.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[ThatDippyTwat]

[A100man]