You need to install the auxiliary heater pipes to the vehicle, the auxiliary heater pipes to the clamps, the heater/A/C tubes retaining nut to the stud at the frame, the auxiliary heater pipes to the auxiliary heater core, the right front wheelhouse panel, the right rear wheelhouse panel, the vehicle right assist step and the auxiliary heater pipes to the heater inlet and outlet tees and connect the outlet
Heater Hose to the heater core and the inlet heater hose to the heater core and fill the cooling system.