Melted wiring harness!

[GabrielGoes]

Ok, checked and all connections are correct. Checked and getting 4.6 ohms at both coils, and the coil doesn't seem to get as near as hot when running. A little warm when running, but after 5-10 mins. with just key on and not running and the posts that hold it on get very hot, almost enough that you don't want to keep holding on to it. Bike seems to idle pretty well and revs. easily once the bike gets warmed up. Also swapped wires and still left coil getting hot. Oh yeah bike doesn't have points. terrylee

From my experience terry, HOT was never good for me it lead to a meltdown in the end, like matchless said, swap the coils and see if the problem follows the coil, maybe the ground wire is not a thick enough gauge if you combined quite a few, or maybe just an improper ground, i dont know i would go for like a 50 mile round trip on the bike then maybe consider letting the wife ride it!

[Matchless]

Terry if you swopped both wires positive and the negative trigger from the ignitor to the other coil and with the resistances testing OK at 4.6 ohm primary, maybe check the secondary as well.

Try physically swopping the coil and make sure the mounting posts are not corroded on the surfaces that bolt up, thus any heat in the coil core is not dissipating to the frame. Paint and corrosion may be a culprit here.
Finally check if you are getting a permanent ground/negative coming in on the coil from the ignitor when the bike is on, but not running..
Normally if the bike is not running the trigger pulse in your pickup is not firing the ignitor, which in turn should not put out a permanent signal to the coils.
If you get this just briefly touch the starter and see if it goes off and maybe moves it to the other coil. If so you coils should be OK, just heed any excessively prolonged ignition on without bike running. I recall this was an issue when using the HEI modules and depended on exactly where the ignitor was when you turned the igntion switch off.

Keep well.

[terrylee]

Thanks again guys, I did swap the lead in wires to the coils and the problem stayed with the left. I will try taking it off and cleaning post and frame and see if that may help. I did have to take this coil off when I was putting on the new harness. Also I think I did combine two of the ground wires coming out near each other on the right side, one was a heavier gauge wire than the other, so will undo that and ground separately. terrylee

[terrylee]

Ok. cleaned and sanded ends of posts and where coil attaches to frame and seem to help, got warm but not hot. Checked all grounds and I had not combined them and they looked good and grounded. Thanks for all the help, am going to try to ride as see what happens, and as soon as I can afford will just replace coils so she has new ones anyway. terrylee

[Matchless]

Glad to have been able to help. Enjoy your riding!