Facet:
If you can take off the playfield glass, unscrew 6 screws, take out a flasher bulb and remove a plug from a socket and then reverse this process, you can replace your Mothership PCB with a GozMod in under 10 minutes.

Installing

Installing the GozMod is a cinch. This 6 1/2 minute video shows just how easy it really is:

If you're after a paper version of the instructions, these can be viewed and printed here