Here's a quote directly from it regarding installation:
4) CAREFULLY remove the two circuit boards from the shells. No tools should be needed for this, pull it out by
hand. Once the circuit boards are out, separate them by removing the screws holding them together. The PCB
connector has a coating that should be cleaned with "Goof Off" which can be bought at most any hardware store
usually in the paint aisle. Place a folded paper towel under the edge connector, and dribble some goof-off on the
top of the edge connector. In about a minute, the coating will melt and can be scraped/wiped off (use a dull knife,
small screwdriver or soft plastic putty knife). DO NOT DAMAGE THE FOIL ON THE CONNECTOR! Doing this a
couple times on the top and bottom results in a very clean connector.