I have a 1986 312-A # 21-12KE01 wheel horse having electrical issues starting with key. It will start jumping solenoid and runs good just mowed grass this morning and did well, and cuts off by key. I have replaced key switch solenoid and regulator. The oil safety switch is jumped out, but when I take jumper off regulator doesn't click anymore. I have found wire coming from regulator to solenoid when trying to start doesn't have voltage going to it. When using a test light trying to start it just barely gives a glow other side of plug going to regulator has voltage. I am not a electrical person just trying to get this 312 back to where it needs to be. I have at my other house is a C101 best wheel horse I have ever own no issues of course doesn't have the electrical this one has.