Single or dual fire coils

I'm currently working on a 1982 xj650r and I purchased a new set of coils. I purchased single fire dual output coils because that's what dyna listed would work. I am having some doubt though I was wondering if anyone knew whether I needed dual fire or single fore coils it's a 1980 xj650 maxim ignition on a 1982 seca motor. Any help and insight would be greatly appreciated.

 

I don't know the terminology - but the "secondary" hi-tension spark works in an odd way.
The coil creates around a 7,000 volt potential, and it "grabs" some electrons from one spark plug, and sends them to the other.

Which means - one of the plugs fires "backwards" and the other fires in the normal way, like a car does. The head is the common ground.

This also means if you pull a plug wire completely off, you kill 2 CYL.

List your DYNA coil numbers, and others will tell you if you got the right one.

 

I have dc1-2 coils

 

you want two low volt terminals and two HV terminals, then just hook them up like the old ones.
their the mini equivalent of the green coils

 

So will the dc1-2s work? And any positive idea on the firing order my bike had no coils when I got it

 

yea those work, orange wire to the coil for 1, 4........i think

 

The Firing Order is: 1 ~ 4 <> 2 ~ 3.

Place a call to DYNA Technical.

(626) 963-1669 Ext. 4156
Speak with Lewis.

Be sure to tell him you are replacing Yamaha Coils.
Have the Model # of your Ignitor handy.

 

Along with potentally killing the TCI.

 

Thanks everyone for all the help I calle dyna and was informed dc1-2 coils will work it's mainly a terminology issue between jap bikes and Harleys