bike wont start.

[to v or not to v]

went to go on a ride tonight. turned bike on, everything normal. pressed start button and bike died. no noise, just lost all electrics.
checked fuses, everything ok. then i wiggled the wires coming out of the fuse box and the electrics came back. pressed start button and there was a audible click from the fuse box and everything died again. rinse and repeat.
heres a pic of the fusebox and wires
https://i.imgur.com/ercUOeZ.jpg

help!
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current bike Yamaha Thunderace.
Moto Guzzi V7.

[jaffa90]

What is the battery voltage and the voltage with the negative probe on the frame when pressing the start button? In other words is the battery connected to the bike?

[Nobby the Bastard]

[doggone]

Touching the fuses area might be a red herring you maybe just wiggled all the wires enough to temporarily make a poor connection.
I'd try tightening battery terminals or better undo them completely and wire brush gently before retightening.
The earth side is always most likely to be dodgy.

[to v or not to v]

thanks for all the replies fellas.

battery terminals are tight and clean. how do i go about testing the voltage?
i have an old ammeter but no idea what im doing with it to be honest.

i have one of those lithium battery emergency jump starter things in my car. will give it a try.
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current bike Yamaha Thunderace.
Moto Guzzi V7.

[Nobby the Bastard]

[Robby]

You wiggled things and it worked. So something is loose or broken in the area that you wiggled.

Loose is easy to fix. Find anything loose and make it tight.

Worth charging the battery too. The click could be the starter solenoid with a low battery. Usually lots of clicks there though. One click suggests a bad connection.

[to v or not to v]

connected jump starter and bike fired straight up. have ordered a new battery from Halfords.
thanks for the help fellas
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current bike Yamaha Thunderace.
Moto Guzzi V7.

[Nobby the Bastard]

Ah, but you don't kno why the battery was flat. Had it died or has your charging system failed. You may have just bought a battery for no reason because your old battery may have recovered if charged.
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[to v or not to v]

battery is kept plugged into an optimate charger so definitely not flat.
i have no idea how old it is, so hoping its just reached end of life.
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current bike Yamaha Thunderace.
Moto Guzzi V7.

[to v or not to v]

new battery fitted and every things good.
once again thanks for the help fellas, and as much as it pains me to say it, especially Nobby
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current bike Yamaha Thunderace.
Moto Guzzi V7.

[doggone]

A ghetto way to check it is probably charging, somewhere not too bright have bike idling and rev it gently with something in front of headlight - your hand will do.
The headlight ought to go noticeably brighter coming off idle.
Or rather if it does you know it's charging Ok.

[DaddyStu]

Just fitted a new battery on mine due to dash "Lo' warning and check engine light. Starts lovely - rev'd the nuts out of it on the drive for 10 mins. Commuting tomorrow.

Old battery says fully charged and indicating 12V. Maybe just reached its limit and wont go any higher without some tickling up. Might've been old anyway so wanted to swap it out.
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Daddystu
Zontes 125-G1 (part-ex'd). Yamaha Tracer 700.