so we're moving into a new facility...which is somewhat wired with cat5 and some patch bays...but of course i have no documentation on what goes where ...and with cables bundled and running all over 35,000 sqft...visual tracing is not an option...so i'm thinking there must be a tool i can use to test endpoints...i've googled but only found continuity testers...ie both ends in front of you...i suppose there's one out there...but do i need one..

i figure i can solder up a 2 piece tool...a battery connected to cat5 m and f jacks for the remote cable end and an LED connected to cat5 m and f jacks for the patch bay end...plug the powered end into the remote cable and plug into the patch bay until the led lights...seems simple enough..

anyone see any problem with that...