I did mine a while back, and yeah, dead easy if you had clear instructions. As it was I fiddled around for a fair while, mostly because I made the mistake of changing the coil at the same time, and it turned out that the new coil was faulty. Put the old coil back in and it's all good now.
Edit: Just thought it might be worth adding a warning about not leaving the ignition turned on without the engine running. I read that this will cause the module to overheat and burn out fairly quickly.