Was it starting just fine before replacing all this stuff? The coil or ignition module could be bad. Are you sure it's an electrical issue? Try spraying some carb cleaner or very small amount of starter fluid in the air breather. If it fires or tries to then you have a fuel issue. If it doesn't then you'll have to get your voltage meter out and trace where you lose spark. There are threads(stickys) that have info in that area or there's a thread about it. I can't remember which. But it's in the repair forum. Or maybe someone might feel like repeating it here yet again.Replaced the coil, voltage regulator, and ignition module and still won't start
may be its battery is dead when you did jump started it, or its fuse burnt out
Why is because the alternator in a large vehicle, like a truck or auto, is designed to charge a battery of 50-100Ah, while the battery in your bike is between 10 and 20Ah. Charge current should be about 1/10 to 1/5 the Ah rating, not much more. Your running truck can easily put more than 10-20A into your little battery, which will damage the plates. Jump starting should be just that - starting, not charging. Once your bike is running, it should be able to keep running on the output of the charging system.Pretty sure H-D says not to have vehicle running. why?