Replacing the Coil

[Gpaws1968]

Hi all it's me again,

I purchased from MikesXS a Coil - Ignition - 3.3 Ohm - Dual Output - XS Performance (see pictures) and it came with no installation instructions

The questions that I have are:

1. Does it matter which way the red and green wires are positioned and if it does the witch go where?
2. The 2 outlets for the plug leads which one is for which cylinder?
3. Which cylinder is number one for the firing order?

1981 Yamaha XS650 with electronic ignition system

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[DogBunny]

Red and green wire position does not matter.
Which tower goes to which cylinder does not matter.
Both towers fire at the same time, regardless of which cylinder is in compression. This is called a wasted spark system. You don't need to worry about the cylinder firing order.

 

[Gpaws1968]

Red and green wire position does not matter.
Which tower goes to which cylinder does not matter.
Both towers fire at the same time, regardless of which cylinder is in compression. This is called a wasted spark system. You don't need to worry about the cylinder firing order.

Wow, never heard of that before, thank you