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Do you have the Service Manual pdf yet? (You might need to have at least 10 posts to be allowed to download. By the time you answer the question, you'll be there!) Anyway, the "Ignition Circuit" tests the you want are on page 7-21 to 7-26 of that manual. You'll need a voltmeter for the resistance tests. (I use the cheap red Harbor Freight one that everyone else uses. Harbor Freight Item #63759 https://www.harborfreight.com/7-function-digital-multimeter-63759.html) Sorry I can't tell you exactly what the connector looks like or where it is. My 2012 Big Bear is different and the pictures in the 1987 pdf manual are not great, but it shows a 4-wire harness (yellow/green/gray/blue) coming out of the left side of the engine case (there is a picture of the stator and CDI rotor on page 3-15), which you need to disconnect to test the resistance of each of two pickup coil windings. You should also test the resistance of the source coil winding and the ignition coil primary and secondary windings. (the resistance values are on page 7-24 and 7-25). Basically you should follow the whole test procedure and do ALL the tests, and record the results and see if anything is out of spec. There may be several values that are marginal and together they reduce the system efficiency.

You can get an in line spark tester that will tell you if you're getting spark when cranking over. Here is one carried by Harbor Freight https://www.harborfreight.com/in-line-spark-checker-63590.html There are several others at various price points available mail order or in store at most auto and RV parts stores.

Hey Billy, Assuming you've got all the battery cable and engine ground wire ends shiny clean (using wire brush or sandpaper) there's one more thing to check. Has the starter motor ever been removed? Do its mounting bolts look corroded? It grounds through the frame, so make sure the metal is shiny clean where the starter touches the engine. You could be getting a voltage drop there.

So I want to say thank you for the help. And have a couple more questions. I ordered a key switch off line and for some reason. When it's in the off position it's on and when it's in the on position off. An the radiator fan is not kicking on so I'm guess no part of the cooling system is working any ideas. I haven't really looked at it a hole lot. Othe them do say all the wires are ok. And there two wires a blue and a brown wire in the front and by the motor and idea what they hook up to. Everything is hiked up there is nothing for them. I was thinking battery but don't see a spot for a battery. Again thank you for all your help