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2010 GTV 250
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Location: Miami FL
 
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2010 GTV 250
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UTC quote
Good Battery and digital clock works, but turn on the key and clock fades and no lights or anything happens....???
Bought a new battery and charger. Checked and both batteries show full charge..

Voltage regulator...short in ignition switch....or ???
@willie_b avatar
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'20 300GTS Super Tec '09 250 GTSie '75 Rally 200 '79 P200 '09 Stella 221
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@willie_b avatar
'20 300GTS Super Tec '09 250 GTSie '75 Rally 200 '79 P200 '09 Stella 221
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UTC quote
Checking fuses would be my first priority.
OP
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2010 GTV 250
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Location: Miami FL
 
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2010 GTV 250
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UTC quote
GTV 250 Fuses Checked
Thanks...just checked the fuses and all were good.

Now reading my maintenance manual and checking the starter relay. I should be able to hear it click when I go through starting sequence...don't have an electrical tester and don't think I heard it click. It is behind the storage compartment.....

Any other ideas gratefully accepted...;-)
@dooglas avatar
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GTS 300ABS, Buddy 125, Buddy Kick 125
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@dooglas avatar
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UTC quote
maxtrax0 wrote:
Now reading my maintenance manual and checking the starter relay. I should be able to hear it click when I go through starting sequence...don't have an electrical tester and don't think I heard it click. It is behind the storage compartment....
An electronic multi-meter can be pruchased for $10-20 and will allow you to trace the circuit to see what is receiving power and what is not. If you are going to try to do any electrical trouble shooting yourself, you really need one.
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2010 GTV 250
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2010 GTV 250
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What keeps the battery charged in GTV 250?
Just checked all the fuses and all look good. Hi-Beam bulb went out a week ago, and will replace that. Checked the leads to the Starter Relay and they look good.

After the battery is in, I connected the charger on 2 amp trickle and it is taking a charge...hmmm....when I connected the charger to the battery earlier this morning it showed up Green / fully charged....a mystery!

So I am charging the battery full and so now....what recharges the battery? Don't think there is an alternator on this scooter...

??
@dooglas avatar
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@dooglas avatar
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UTC quote
maxtrax0 wrote:
JSo I am charging the battery full and so now....what recharges the battery? Don't think there is an alternator on this scooter...
Scooter engines have a device called a stator which functions like a generator. It is a circular series of coils mounted on one side of the engine which spins when the engine is running.
⚠️ Last edited by Dooglas on UTC; edited 1 time
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2010 GTV 250
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UTC quote
Multi-Meter needed
Thanks for the tip. Will get one at Home Depot tomorrow...What could allow the battery to just discharge while running? I rode 100 miles in the Keys last Sunday and ran great, and then I noticed the green light flickering and then motor just died....in Marathon about 48 miles from Key West....and 150 yds from a KMArt so bought another battery.....charged it up and rode home...
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2010 GTV 250
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How to test the stator?
Guess I need the Testor to check the Stator?
@dooglas avatar
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@dooglas avatar
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maxtrax0 wrote:
What could allow the battery to just discharge while running?
A failure of the stator or voltage regulater could certainly do that.
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2010 GTV 250
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UTC quote
Battery discharge
So it looks like I've just been running on charged up batteries and they are not getting recharged.....Anyway you know to check to see which of the Regulator or the Stator could be the problem?

I am charging the battery now, and guess it will be starting soon....wo without the testor, know of any test to do to separate the regulator and or strator and see what to look for?....
@14perry avatar
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@14perry avatar
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Check the hidden fuse that is mounted on the starter relay.
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Check the wires for corrosion. Especially the thicker ones 4,6,8 gauge. Sometimes it will migrate under the insulation and cleaning the contacts doesn't work. If so, then replace them.
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If the hidden fuse is open the scooter will not charge.

http://www.wotmeworry.org.uk/manuals/Vespa/GTV250/GTV250%20Wiring%20Diagram.pdf

Also check the 3 pin connector between the magneto and the voltage regulator.
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UTC quote
bad voltage regulator.
@david_masse avatar
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2016 Vespa GTS 300 i.e. ABS sold, 2010 Vespa GTS 300 ie Super (sold) & 2003 Honda Shadow VT750 ACE (sold) & 2006 Vespa LX150 (sold)
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UTC quote
The clock runs off its own battery, the ignition on or off should have no impact on the clock.

Have you checked the obvious causes like 1) kill switch off, 2) left or right brake on? If you're holding the left brake, try the right one, the brake light switches have been known to fail. Try flipping the kill switch a few times, they've been know to become oxidized and fail.
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UTC quote
It starts with a fresh battery, so works 'ok'.
There is no 'hidden fuse' on a GTV, the main 30A fuse also protects most other circuits.

It is most likely the connector between the stator and the regulator which has corroded and burnt out. Lift out the pet carrier and look for the big brown connector at the front of the engine compartment with thick yellow wires going into it.

If not that, then it is just possible there's another point of failure, but you'd probably have to get diagnosing with a meter to find out where.
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