Hey guys have a 1971 5ph briggs original dunecycle engine. Having problems getting it started. No spark but if I hold the spark plug wire I get a good shock. Checked the point, its clean. Aldo there are 3 wire coming out. 1 from the ignition coil and 2 from were the point is. Any ideas?? I know there probably for a kill switch just not sure how the set up. And advice would be helpful since I'm so new with the old engines. Tha is guys !!