2022 PRO-TOTE 8 ELITE, 8 ELITE; Fits To: MACK, KENWORTH, PETERBILT, FREIGHTLINER, INTERNATIONAL / RB690S, W923, 587, FLC120, CL703, RD688S, 9900i, GRANITE GU713, 378SFFA, 579; The Model 8 Elite is unique to the Fifth Wheel Wrecker Industry with its exclusive on board power capabilities. Power is provided by an on board group 31 deep cycle marine battery. The battery will receive a slight trickle charge from your truck's light system as you go down the road. The flashing light will activate when you turn on your lights. The wrecker's electrical system is protected by a 10 amp breaker. There is an electrical diode installed to prevent back feed. The Model 8 is a truly self-contained wrecker assembly. A port on the rear of the wrecker will accept a 7 way trailer light plug to power your light bar.