Hello all I have just upgraded my work van to an ex BT Doblo maxi 1.6 and I love it. I’m just getting v used to where everything is and I have a switch for ambers which must be for the 4 lights on the racking. The cable which goes to the switch has an adapter with a fuse carrier and fuse on it. This is not connected to the fuse box. Where and how can I connect this please? Thanks in advance for any help. 