What was found
GOT LE FLAPS TRANSIT LT DURING INITIAL TAKE OFF ROLL. LOW SPEED REJECT HISTORY PREV LEG CREW REPORTS LE FWD LIGHT. #8 SLAT IN TRANSIT BEFORE AND AFTER REMOVED #8 LEADING EDGE SLAT OUTBOARD PROX SENSOR AND MOUNTED ACP SPLICED WIRES IAW SWPM. TAKE OFF ROLL. THEY CYCLED FLAPS THROUGH DOWN AND UP. FAULT NEW SENSOR REF AMM 27-88-11. WIRES ARE READY TO BE SPLICED AND DUPLICATED. AT GATE WE ARE UNABLE TO DUPLICATE. FSEU BITE SHOWS SECURED. NO CURRENT FAULTS AT ALL POSITIONS. FAULT 27-81214 IN FAULT INSTALLED LE #8 SLAT PROX SENSOR OPS CHECK GOOD REF AMM 27-88-11-400-801