With the engine at speed you should be around 12-16 volts.

How do you wire LED lights to a snowblower?

2:4610:53HOW-TO Install LED Lights On Your Snowblower Without The Flicker!YouTubeStart of suggested clipEnd of suggested clipAll you need to do is pipe into one wire just like I did over here and it goes to the rectifier. AndMoreAll you need to do is pipe into one wire just like I did over here and it goes to the rectifier. And then on the negative side of the rectifier. It just goes to the ground wire.

Can you add a light to a snowblower?

To add a light that receives its electrical power from the engine would require installing a stator (alternator) which would require different flywheel to provide magnetic flux for the stator to operate. This can be done but the cost for parts alone is around $200.00.