Here is a picture showing the pump bay. This particular pump design has a pick up which is used to fill the tank and a delivery used to empty the tank under force either through the monitor on the top of the vehicle or by other means. Both of these can be seen covered with red blanking caps, delivery on the left and pickup on the right. The small red lever on the far right of the pump bay is a throttle control used to regulate the speed of the vehicles engine and in turn the pump. There is also a radio handset so the driver of the vehicle can keep in radio contact whilst operating the pump.
The second picture shows the monitor, which is now connected to the delivery. Monitors are used to spray high volumes of water or foam onto a large fire.
The third picture shows the tool cabinet with a lift up door. Most of the small equipment is stowed away inside here.