What was found
DURING COCKPIT SET UP/PREFLIGHT & AFTER APU STARTED RECIEVED FIRE WARNING TONE, LWR CARGO FIRE, FLASHING DISCHARGE LIGHTS, PUSHED DISCHARGE, AFTER 2 MIN, STILL FLASHING, PUSH 2ND BOTTLE, CALLED FIRE& MX. EXITED AIRCRAFT. AFTER REPLACEMENT OF BOTTLES FOUND CONNECTOR PLUGS FOR BOTH 1 & 2 BOTTLES FOR FWD AND AFT DISCHARGE CONNECTOR PLUGS WERE SWAPPED ( FWD BUTTON WAS PRESSED BUT AFT SQUIB WAS DISCHARGED) REF WRI 26-97/7185 FOR CORRECTIVE WIRING ACTION. WORK CONTINUES. PERFORMED CARGO COMPARTMENT FIRE EXTINGUISHING DEPLOYMENT LINES ROUTING AND LEAK CHECK PER AMM CHPT 26-22-05-5,DEPLOYMENT LINES LEAK CK'S SAT. OK FOR SERVICE.