Help needed , no lights or horn.

[Homer]

Need help guys. Just picked up a crashed 2010 EC450FSE. Minor damage is all fixed. Bike starts and runs great, but the electrical system is dead. Starter motor cranks fine, but I have no lights or horn. Looked for a fuse that may be blown, but can't find one anywhere. Thought it might be stator, but battery if getting 14v at idle, so that side of the stator is fine. Not sure where to look next? Left switch block has some superficial damage, but inside all wires are intact.

 

[Anders]

Most of us ride the twostrokes, that may be the reason for the lack of response.

As you say you have 14v at idle, you obviously have access to a voltmeter.
There is a parts list at https://www.enduropuro.it/shop/en/content/43-ec-f-2010
I cannot find an electical diagram, but owners manual is here: https://www.manualslib.com/manual/1401971/Gas-Gas-Ec250-4t-2010.html?page=67#manual

I have no experience with the fourstrokes, but on the twostrokes there are no fuses. I don't know if your lights are AC or DC. On the twostrokes from the same era, they would be AC.

If there is a yellow wire from the stator, that is most likely your AC from the stator. I would start by measuring the voltage there.
Then, follow that wire. If it ends at the regulator without any branching, I guess all consumers are DC. If there is a branch and the yellow wire goes to the switch, your consumers are AC.
If DC, measure the output from the regulator and then the input to the light switch.
If OK, measure the output from the light switch.
and so on...

Hope this helps
Anders

 

[webmaster]

The wiring diagram (and service manual) can be found here :

Electrical Schemas - GAS GAS FSE 450 Service Manual [Page 63]

GAS GAS FSE 450 Manual Online: Electrical Schemas.

www.manualslib.com

The electrical system on any bike can either start out with a 3 phase stator and voltage regulator/rectifier - 3 wires from stator to regulator/rectifier. Or it can be a single phase - two wires from stator.

In your case, you have a ducati three phase stator and a ducati 3 phase regulator/rectifier. Since you are seeing a charging voltage at the battery - all this should be good.

I would check the connector that feeds the left handlebar switches - looks like most of what you say you are lacking feeds through there. This is ST25 and ST26 on page 62 of the wiring diagram. Maybe unplug that one, clean it up and plug it in properly. ?

Check for proper grounding using continuity testing.

I would disconnect the left handlebar switch at ST25/ST26 and check for continuity while operating the switches. The schema shows which pins to probe and check. Eg probe the horn pins and then press the horn button etc..

Also check the connector at the cable harness - which is st14 on the first page of the schema.

It is always good to use deoxit d5 to clean the electrical connections and dielectric grease to seal them.

jeff

 

[webmaster]

Bump - edited after I found the wiring diagram for the fse450.

 

[Homer]

Thanks for the help, and please excuse my frustrated post. Turns out theres a mini 15amp fuse tucked in behind the headlight which had blown! Took me three tries to actually find it.

 

[webmaster]

Glad it was an easy fix for you.

Jeff