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Old 22-08-17, 09:39 PM   #21
NTECUK
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Default Re: Low beam not working.

Print out the wiring diagram.
Highlight the current flow on it .
Check the voltages at accessible point and record the voltages with everything plugged in.
Uses a scanner or cam scan app on your phone and post it up.
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Old 22-08-17, 09:50 PM   #22
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Default Re: Low beam not working.

Something like this
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Old 23-08-17, 08:36 PM   #23
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Default Re: Low beam not working.

Well NTECUK, I ( Chris, Jax's tame bike tinkerer) did as you suggested and managed to find the problem. As usual it was the last terminal i got to =0/

The problem was a bad connection where the left switchgear plugs into the loom. What an absolute PItA that was to access! Tank off, airbox off, throttle bodies off, unhook radiator?!? REALLY? and remove the plastic trim above/behind the rad. There may have been some 'colourful' language around this time....
It still took a while to actually move the connectors where i could get enough purchase on them to disconnect them (both switchgear blocks and the ignition connector block are mounted on the same plate, and the wires wrapped around the cross tube so even when you have managed to unbolt the plate it is impossible to pull them very far up, or down)

...there may have been some more colourful language at this time also.

Once the connectors were unplugged i unwound the wires and that gave me enough slack to be able to test the left switchgear multipin connector. As i was moving the block trying to get the multimeter on it the lights started winking at me! Eureka!!!! Cleaning the pins with a terminal file and spraying them with ACF-50 made little difference so i ended up cutting the white low beam wire and crimping a new pair of spade terminals on.

Success! Thank you all for taking the time to post on this thread, i was rather lost and appreciate the help given, SV650rules explanation of 'the golden rule of electricity' re; resistance and current draw was a massive help. Electricity is all smoke and mirrors to me

right, the bike's back together, time for
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Old 23-08-17, 10:16 PM   #24
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Default Re: Low beam not working.

Congratulations .
You all deserve a good drink!
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Old 24-08-17, 02:35 PM   #25
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Default Re: Low beam not working.

Quote:
Originally Posted by suzukijax View Post
Electricity is all smoke and mirrors to me
Forget all that stuff about electron flow, electricity is only smoke in small copper pipes, have you ever noticed once you see the smoke leak out of any electrical circuit the whole thing stops working.

Glad you fixed it OK
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Old 02-10-23, 06:46 PM   #26
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Default Re: Low beam not working.

Having read loads of the low beam headlights not working, with fuse & bulbs ok on my 2005 SV650S does anyone have pics of where a relay could be causing problems (cant see having removed airbox as i was told but taking fairing off waiting electrician to check few in there?
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Old 03-10-23, 08:51 AM   #27
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Default Re: Low beam not working.

as far as i'm aware there is no relay. the culprate is usually a furred up multi plug inside the nosecone under the instrument cluster.
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Old 03-10-23, 06:13 PM   #28
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Default Re: Low beam not working.

Wow, a six year old thread being resurrected!

Welcome Ade, by the way. Hope you get your issue fixed.
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Old 08-10-23, 09:31 AM   #29
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Default Re: Low beam not working.

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Wow, a six year old thread being resurrected!

Welcome Ade, by the way. Hope you get your issue fixed.
Thanks guys really appreciate as suspected will review and get back
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Old 08-10-23, 09:42 AM   #30
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Default Re: Low beam not working.

Corrosion is the enemy on motorbike connectors, it pays to strip and clean any connectors and dose with ACF-50 which is magic stuff..... as it does not damage plastic and actually seems to clean up metal.
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