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Hi, Kyle, Clymer and/or Chiltons both made service manuals that covered dozens of old snowmobile models including yours (with wiring diagrams).Thses manuals were still in print 20 years ago, so you probably could find one used. Also, a good snowmobile parts dealership could help out, as many different brands of old sleds had very similar wiring. You could also fabricate a wiring harness. The complexity depends on if your machine had instruments and lights (some didn't) The engine's ignition system should use an internal magneto with a capacitator discharge ignition (no points) if the engine is older, it may have points. All this should be contained within the engine, so if it was rebuilt properly, there is no ignition wiring needed. All you would have is one ground wire coming from the engine. When this wire is connected to the chasis ground the engine will shut off. This wire is hooked up to the dashboard ignition switch or an 'engine stop' button. (Many later sleds had both). If the sled has lights the engine would have a built in 'lighting coil'( DC generator, usually 6 volt) and external voltage regulator. If there are lights, look at the base of one of the lightbulbs to confirm the voltage)
This lighting coil has 2 wires going to the regulator (which is bolted to the engine). The lights simply hook up to the regulator output wire theough a dashboard switch. Often, you can use an aftermarket snowmobile voltage regulator for this, as they often have wiring diagrams included on the instructions. Finally, Kyle, please note I have not mentioned any of the obvious "tractor website" and "snowmobile" jokes.
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