Voltage drops to 0 when turning key on

phliper said:

Thank you! I redone my entire wirering with a new one. So i will check each connectors. My rear light works, but not the other. So i guess that's what's draning my power.

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Any circuit that drained the system voltage to "zero" as you said previously, would be a dead short and result in one of two things happening, either the fuse would blow immediately, or without a fuse, the wiring leading to the short would burn out!

phliper said:

DogT said:

Kill switches are the other big culprit. When I took apart my ignition switch to clean it, it looked fine, but worked fine after I cleaned it up.

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Never thought about that! Will check that point too!

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A faulty (open) kill switch would not cause: "the voltage to drop to almost 0 everywhere, except on the battery" and is unlikely to be the cause of any lighting circuit problems. As I mentioned earlier, the system voltage isn't being dragged down to zero if some electrical items are working.

No volts in a particular circuit would suggest it's an 'open circuit', not that the voltage is being dragged down.

Unfortunately, you haven't answered the questions I asked, so that makes it difficult to pinpoint exactly what or where the problem is.