The wire arrowed red, is the armoured plated cable to the electronic control. Test by gently squeezing and move side to side. Do force. If no movement then this item is OK. If cracked or has any movement then it should be replaced.

The yellow arrow is the 12volt heat shielded cable to the Piezo igniter.

The Blue arrow indicates the copper piping from the gas cylinder.

You can see the white sealant I have placed on the wall of Motorhome base to protect the base sandwich. I have done this on all the holes made by the coach builder in the sandwich base place.

The white arrows show the gap made by the coachbuilder to accommodate this heater base. As this was not made to measure, the gap is greater than neccessary so I shall fill this area with aluminium mesh to stop midges etc, finding their way into this space and Motorhome interior.