[mmcarter17@aol.com]

I need to know how to pick the correct coil for an engine. Do you check ohmage, resistance, or what. The enjine has a cdi box called an igniter unit, with pick-ups on flywheel. It runs two coils, one per cyclinder and is a 12 volt system. Each coil has 2 wires going to it with a lead to a spark plug. And it is a two cyclinder motor. This is a running engine, what I want to do ,because the coils are so prominent, is to make a presentation out of them. Two nice chrome units with colored wires etc,etc. SO how do I pick the coils??

[Henry Highrise]

So....what kind of engine is this? What brand name etc. It sounds very similar to the ignition system on some outboard boat motors.

[mmcarter17@aol.com]

Henery, Thanks for your interest. The motor in question is a yamaha, around 1986 and is mounted in a hom-built airplane. I have been told its a Virago engine.Thanks again

[Henry Highrise]

You should be able to get the coils from a Yamaha dealer then.

[oldschoolrods]

I would write down all the information off the engine name plate that you can (atleast model and serial #) the dealer should be able to match you up with the right ones that way.