Hi everyone! New to this site, so please forgive me if I'm not doing this correctly. I have an old Snapper that I'm trying to retrofit with a new b&s 10.5hp electric start motor. Supposed to be dual alternator, whatever that means. pn is 215807-0324. Could someone help me with the wiring? I have a new switch with 5 terminals and a generic 12v solenoid. The engine has three wires coming from it. Together a red and an orange that looks to be coming from somewhere near the top of the starter and then a black one from the other side of the engine. All these come together in a connector. Very limited on this subject matter, so the more detailed info you can give the better.

Thanks,
Brent