[scruffman]

ok... two coils, one exhaust side the other intake side... which is which?? replaced one a year or two ago, got a new one today, so I want to put it on the power side

[scruffman]

so??? which is the power stroke one?? or are they bothe the same??

[chenmp]

I have dual coils to, i would be interesting in know this aswell if any body knows?

[C J]

the diagram i have show a Tan/Orange and a Tan/White wire going to the Right Primary Coil Pack and a Tan/Light Blue and a Tan/Light Green going to the Left Secondary Coil Pack.

primary is intake side, secondary is exhaust side.

[scruffman]

got the plug order too???

[C J]

alldata shows: this

[Marvin]

Both coils in both coil packs fire on the power stroke. Each coil pack has two coils which are connected to two spark plugs each. this arrangement makes possible the firing of two plugs with each coil. The plug which fires on the exhaust stroke does nothing but complete the electrical circuit to ground for the associated plug on the power stroke.
I haven't found, in any literature I've seen, the reason for the dual plug setup, but my guess is that it's to get a more complete burn while the piston is at near maxium compression. That would logically provide a boost in power.
The engine will run on either coil pack with the other disconnected, but seems to me to have a slight loss of power. Also the tach will be inoperative with either pack disconnected.