Well, first, a coil is a coil, and it is triggered to fire by the electrical harness, therefore the harness connection is the critical hookup. I honestly just replaced all my coil-pack, [actually the g/f's packs], and put on paper which harness connect went where before pulling. If ya have the tools to do it, pull yourself, but $7.00 per isn't too bad if ya can't do yourself.
As far as testing, may I suggest a surf of
www.autozone.com, they may have the right info for your specific ignition system. [freebie site, btw]