Videos of small engine coil wiring Click to view on YouTube3:02Wiring an external battery coil to your engine329K viewsYouTube · 5 years agoClick to view on YouTube3:46Honda Small Engine Ignition Coil Replacement #30500-Z8B-90124K viewsYouTube · 3 years agoClick to view on YouTube5:36How to check small engine coil voltage157 viewsYouTube · 1 year agoClick to view on YouTube4:22How to Replace an Ignition Coil on a Small Engine4 viewsYouTube · 2 years agoClick to view on YouTube3:08Briggs & Stratton Replace Small Engine Ignition Coil #79696459K viewsYouTube · 8 years agoClick to view on YouTube2:06How to wire an automotive coil to a small engine1 viewsYouTube · 6 years agoSee more videos of small engine coil wiring How to test and repair small engine ignition system problems? How To Test the Ignition Coil in Your Small Engine. Be sure to unhook the coil from the equipment wiring harness as well as the engine's wiring harness and use the spark tester. Make sure the coil grounding lead is not shorting out against a piece of sheet metal. How to Wire an Engine Coil | It Still Runs An engine coil is used to produce the high voltage needed to fire the spark plugs on an internal combustion engine. Coils on older model cars -- or those made before 1980 -- were controlled by a mechanical switch commonly called points.