Sorry, not Ducati but GSXR but I don't get any sense elsewhere. So, as a general thought, not bike specific but general electrics. Its not the bulb, I checked that first. Took sensor off and cleaned by front sprocket and the x connector to the loom. No difference. I did notice when the sensor was disconnected the fuel pump would not prime. This makes me think sensor is ok. Next thought is break in wire going to the dash? Is there a way to use a multi-meter to check?
CR, straight answer is yes. You can check for voltage progressively through the circuit with a probe, you can break the circuit down and check continuity on each part of the circuit (between plugs) or you can short or bridge the circuit elements using a fly lead. In each case you will need the circuit diagram, understand how the circuit works and need to work out the +12v and earth paths. Without a circuit diagram it can be difficult.
Awesome, clever/helpful person on-board. Never done this before so please excuse dummness. Once I get it straight in my head though I'll be fine for future. I stuck my multi-meter on ohms at its lowest setting and stuffed it in the earth and bulb (blue)wires and I got a reading in neutral. When I put it in gear I got no reading. Is that continuity? To me that means the switch is OK as there is a current (resistance)(continuity). I have 3 wires, the 3rd (pink) goes to ECU and as the fuel pump primes when the sensor is connected I'm thinking that's all good. According to my wiring diagram the earth just goes into the main loom earth so I assume that's ok or loads of stuff would not work? Blue wire goes into some sort of diode, so change that next? Can I test that for continuity in the same way? Thanks
Cr, you need to be checking for +12v at the bulb supply, a resistance check is ok for continuity but continuity is simply the conductor is complete between two test points or has nil or very low resistance. If you test for 12v at the supply to the bulb and you get 12v when the bike is in neutral then your fault is either a bulb or an earth issue for the headstock loom. You can check for continuity on the earth side to the fame or check that sides resistance. If you have a diode you can check it is working by testing for continuity (or resistance) through it each way, a diode only allows current through one way. Most bike spurious electrical issues end up as earth problems btw. Too much to suggest without a circuit diagram. How did you check the bulb?
Swapped the bulb for the fuel light one and the fuel light continues to work and the neutral didn't start working. How do I check for 12v?
Fixed, found a cacked blue wire under the relay, bit of sorting and I have a neutral light! thanks, and i learnt a little about electrics.
