The first step to adding the left switch is to prevent accidental air bag deployment by disconnecting the negative
Battery Cable and wait for two minutes. Move the left multi-function switch to the back of the Steering Control Module (SCM) and plug its connector into the SCM. First, bring the locating tabs of the switch housing and SCM together, then attach the switch to the SCM locating tabs with the two provided screws and tighten them to torque of 0.35 Nm (3 in. lbs.) After that, add the upper and lower shrouds to the steering column and attach the negative battery cable.