Determined I had bad coil...read how a Harley coil will work...I installed a round chrome one and fired up nicely...mowed the grass..sat a week...tried to start to put plow on and no spark. 12V at coil and points. checked ohms on coil...and nothing on the + and - post. 10.2 ohms on sp wire post...is this coil bad...thank you for any help