I had to lengthen the coil wires on my last swap. The easiest way is simply cut the wires a couple inches past the connector, remove the connector then splice them back together. You'll want to splice them together properly though. Those are two critical wires. I took a couple pics on how to correctly crimp and splice. Firstly, use uninsulated butt connectors. Absent that, you can use the cheap colored insulated connectors, just remove the colored insulators.......
Next, fold one side of the connector over the wire and crimp........
Then fold the other side over that and crimp........
Then as a safety precaution, add a dap of solder and wrap it with a single layer of electrical tape (I like Scotch #88)......
Then finalize it with a length of 3/16" shrink tubing.......
Now with just a little bit of effort, you have a professional, quality connection that'll last a lifetime. All the ground wires in my last post were done this way and I've been doing this for years on all my projects. Never had a connection fail!