What kind of sled is it? Did you do a continuity test with the Ohm meter or a voltage test? On the triples the coils are wired in series so if you have a problem with the wiring on the first coil all three coils go down.
teather was bad? Come on you gotta tell what what wrong. 2 weeks ago when we had snow my buddy called me pissed off because his sled wouldn't run. 2 days later he still couldn't get it started so I went to look at it, fuel line shut off lmao.
What ever it was you were all looking at the hardest and most expensive fix that usually is not the part that fails (coil, stator, cdi)
When it comes to electrical you must start with the simple (which is usually the problem)
Start with new plugs, check caps and conection, all wiring conections (good shape) Check that the kill switch, key ignition and teather cord are all operational. If you don't find the problem then go to the coil, stator, cdi
I own a independent snowmobile shop in Minnesota and we sell many coils & CDI boxes only to have the customers return looking for more parts because those items were not the problem. It's usually a case were "my cousins sister-in-laws uncles half brothers friends neighbor who work for NASA as a rocket scientist says".
Snowmobile ignition and lighting systems are very simple compared to automotive systems. You can usually do some pretty simple tests and find your problem or you can keep throwing parts at it till you fix it (we call this the "Vegas" method of repair).
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