IPA's Super MUTT Deluxe Trailer Tester, No. 9008, improves inspection accuracy by guiding a technician through 91 critical points of inspection and placing a load on the trailer's electrical circuits to identify wiring problems, often missed during routine inspections. Addressing light testing, ABS and air brakes the diagnostic program instantly identifies shorted, crossed and open circuits, differentiates between poor wire and chassis grounds; and provides amperage display, audio feedback, automatic, manual and remote control operation. The wireless remote allows a single technician to apply brakes from the rear of the trailer while performing visual and mechanical inspections in real time.