It is wise to test the unit before all the cables are hidden away under the vehicle and sealed up. Connect by plugging in the camera and monitor. The monitor has a power lead which will require a switched live which can be taken directly from the ignition switch or from the back of the fuse board whichever is the most accessable. Make sure the system has an inline fuse to prevent any expensive damage to your equipment. The only other connections are to earth and to the reverse light switch which will give you the facility to have a standby mode.

Cable routing is probabally the most time consuming part of the job and takes the most planning as it can ruin an otherwise good installation. With an in-car camera, the most usual way is to rout the cable along the door cills to the rear of the vehicle. With van and motorhome installations, the most straightforward way is normally to take the cable underneath the vehicle attaching it to hydraulic pipes etc. Then coming up through rear floor area following a pillar or cupboard wall up to the camera entry point at the rear. Sealing is normally done using a non drying butyl sealant tape which can be forced into the hole surrounding the cable exit point. Polyurathane sealant which is available in gunnable tubes is also recomended.