Front Vertical
When the seat switch is operated to tilt the front of the seat up, battery positive voltage (B+) is applied through the front vertical motor up switch contacts and the front vertical motor up control circuit to the front vertical motor. The motor is grounded through the front vertical motor down switch contacts and the front vertical motor down control circuit to the front vertical motor. The motor runs in order to drive the front of the seat up until the switch is released. Tilting the front of the seat down works similarly to tilting the front of the seat up, except that battery positive voltage (B+) and ground are applied on opposite circuits causing the motor to run in the opposite direction.