What was found
Flt 95, JFK to OAK, At cruise, Multiple spurious failures during flight: Capt PFO flickering, main PNL & PFD/main PNL lights flickering GPWS. (unassociated w/above) FAL, RA#1 fail, nosewheel steering fail, ILS #1 fail, WX radar spoking & indicating receiver & transmitter failure. Removed & replaced 3XC contactor per 24-25-55-401, Ops chk per task 24-25-00-501 and checks OK.