What was found
AFTER PLACING MLG DOWN, RECEIVED WOW CAS. FOLLOWED BY MLG DISAGREE L R N CAS MESSAGE. DID A GO AROUND, CAS MESSAGES STAYED. MLG STAYED DOWN WITH GEAR HANDLE UP. DID WOW MISCOMPARE CAS QRH . ACCOMOMISHED MLG DISAGREE, CAS MESSAGE , DID NOT RUN AN EMER MLG EXTENSION CHKLT. UNTIL 10 MINS LATER, DID MLG PROCEED TO COME UP, & CLEARED THE CAS MESSAGES. LANDED AGAIN HAD WOW CAS BUT MLG SHOWED 3 GREEN. LANDED, WOW OUT. TROUBLESHOT TO FAULTY NLG HARNESS. REMOVED & INSTALLED A NEW HARNESS IAW MM 32-20-00. PERFORMED MLG OPS CHK IAW MM 32-00-00 NO DEFECTS. NLG HARNESS CHKS GOOD. OPS CHECK OF TAXI LIGHTS IAW MM 33-40-00, NO DEFECTS. PERFORMED POWER STEERING C U OPS CHECK IAW MM 32-50-00. OPS CHECKED GOOD.