I'm not real sure about criss crossing flywheels to coil packs.. They are samey same for the most part, but the diameter of the wheel, and way the point cams work can be different.. I think typically like 3-4 horse motors have about the same diameter coil as like maybe the H60-70 big blocks.. But I know once ya get to like 8 horse, the distance around the inside of the flywheel is different, so ya need a larger coil to fit... OR ya put an 8 horse on a 4 horse, and the flywheel won't fit over it..
THEN ya run into timing issues.. The taper on the front of the crankshaft changes horribly between motor to motor...
It's best to let the more knowledgeable members with a mass pile of misc fcked up parts, to be the experiment guys.. :laugh:
I have a briggs and Sratton 5 horse lighted motor for sale, but the lighting system in the briggs motors doesn't put out much amperage, so you'd want a real low amperage bulb. They are just made for trickle charging the battery for the electric start, but a light will suck more juice than you can produce.. :glare:
If you want to convert a Briggs non lighted motor, you first need the correct block, so you can bolt in the lighting coil.. THEN you gotta have an extra long crankshaft, lighted flywheel...
You're best bet would be run a battery pack, or find an already running lighted engine..