Garage Door Opener Key Switch #KS2

Key switch must be hardwired to garage door opener.   Find suitable location and drill 7/8" diameter hole to a depth of at least 2 5/8."   Drill 1/4" diameter hole, as required, to accommodate lead-in wire.   Opener is activated by insertin key and turning.   key is spring-loaded to return to center of position for key removal.   contacts are completely isolated from key and cylinder assembly.