Moisture will ruin the detector and light socket--this can come from water seepage.  Their are various ways to easily prevent this--a couple of tips include (a) locating the light fixture under a protected area or eave, or (b) use bulb seals to add a moisture barrier between the bulb and light socket, and angle the bulbs downward to keep water out of the socket.

Your detector is triggered by heat--heat from the light bulbs in your fixture can cause your detector to falsely trigger if too close.  To avoid this, keep the bulb and detector as far apart as possible.

Carefully adjust the motion detector distance range and field of view to get the most out of your detector light.  This will help avoid nuisance triggers due to heating vents, trees and shrubs, neighbors, normal traffic, etc.

Check for local ordinances, special rules and regulations that may apply to the work you will be doing.  If required, get an electrical permit from your local department of inspections. Consider calling an electrician to have your work inspected after your are done, or if you have any questions.

CAUTION: Never let your body, ladder or tools come into contact with overhead power lines while working.  This can cause serious injury or death!

CAUTION: If you have aluminum wiring, call a professional electrician.  Aluminum wiring requires special handling. This wiring is dull gray, not the dull orange that’s characteristic of copper.  Do not attempt to work with aluminum wiring yourself due to the dangers involved.