Question about 2004 Ducati 749

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Hi got a 749 2004 headlights and tail light will not come on

Relays have be changed, mechanic is saying its the ECU unit as it out puts power to the lighting circuit after the engine has started.
Ducatis ecu units seems very expensive.

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I can't find anything in the book that says the headlights run through the ecu,,, it does run through the relay box located near your battery, They made 5 different ecu's, (just in case) all have been know to go bad, after market units are available. Back to the headlights, both, head lights and turn signal connections have been know to melt, clean your connections and grease with dielectric grease. Clean out the white film inside headlight with mild degreaser. Your electrical system is taxed to start with, do not add anything to your bike that uses electricity, lights, boom boxes, gps, fuzzbusters, anything. If you ride in the rain, your junction box can have corroded wire ends, you have to pull it apart to inspect it. Your bike is a CAN , computer aided network, I think, I know it came out in 2003, it has little wires performing multiple duties, shaved pounds off the weight of the harness. There are many more things that go wrong, and a lot of aftermarket suppliers out there, I have a list here if you need a computer, headlight, regulator, rectifier, etc. hope this helps.

Posted on May 13, 2010

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Inside kick panel jlmacman_1.png

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248015_1_103.jpg

Fuse locations for options not shown can be found in the corresponding wiring diagrams.
Amp.


1 - Headlight, Low Beam, Left (56b) 10
2 - Headlight, Low Beam, Right (56b) 10
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5 - Windshield Wiper/Washer 15
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Light (30) 15
22 - Cigarette Lighter, Radio, Luggage Compartment
Release 10

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(Located above the relays)



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- Fuse for ABS main relay 30
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