Question about 2003 Ducati 749 S

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My 749 neutral ligh dont come on and dont show the batterry voltage on the gage dont start the engine drive me crazy

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There are few possibilities to be checked. The kill switch, the kick stand switch, the neutral safety switch. The kick stand switch down, and then start. Short in neutral safety switch wires. the neutral light bulb is faulty.

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Try by passing the kick stand switch then check. ---------

If the neutral light is still not coming on then the circuit that allows the starter to function is "open" ( no electrical flow).

It must got through the neutral light circuit to be able to signal the starter relay that it's NOT in gear and allow the relay to be engaged by the starter button ( Neutral Safety Switch ).That way the starter circuit knows it's not in gear ...the kickstand is just another check in the starter circuit to make sure that it's safe to start

There should be a switch on top of the trans that has 2 terminals to it and when the trans is in neutral that switch has a ball in it that is moved up (by the shift drum inside the trans ) and makes contact to allow the light to work and the relay to tell the starter circuit it's in neutral and it's safe to start. Make sure it's plugged in.... and if it is.... then unplug it and us a ohm meter and make sure there is "continuity " through the switch in neutral (key on) position and to see if the rest of the circuit is ok you can take a paper clip and jumper the switch connector and see if the light comes on with the key on............( if it's a one wire circuit then the light circuit is just grounded through the engine case and all you have to do there is ground it to the engine case OR run a wire to the battery "Negative" and see if the light works).If it doesn't and the switch has continuity then you will have to dig deeper into it depending if it has a bulb in the dash then it might have to be replaced OR a wiring issue . Try disconnecting the wire for the neutral indicator, clean it up a little and plugged it back in. Then check. Also check the gauge wirings, if there is any or short wiring, then it can also cause the problem.---------- this should help.Thanks.Helpmech.

Posted on May 18, 2011

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