What was found
(CAN) AFTER TAKEOFF, THE PILOTS REPORTED A BLEED AIR DUCT PRESSURE SPLIT, 40 PSI RT 5 PSI LH. DUE TO COMPANY CONVENIENCE THE ACFT PERFORMED AN AIRTURN BACK WHERE PARTS AND MANPOWER WERE AVAILABLE. MAINTENANCE FOUND INTERMITTENT CONTINUITY IN THE WIRE HARNESS FROM THE BLEED AIR REGULATOR TO 3 O`CLOCK STRUT, MW0311, PN 325-029-905-0 AS WELL AS REPLACED THE AIR CONDITIONING MODULE/PANEL, PN 69-37319-308.