The selectable ride (SR) dampers are gas charged units. Each shock contains an internal solenoid actuator that the SR switch controls. Voltage is supplied to the switch via the ignition positive voltage circuit from the SEO IGN fuse. When the system is on, the voltage is supplied to terminal A of each shock providing firmer damping. Ground is supplied to terminal B of each shock. Ground for the front shocks is G302. Ground for the rear shocks is G401.