Technical light problem

[paflo]

Hello. I had a problem with my lightswitch. When I turn on the lights no response no lights. This was caused by de small switch in de steering switch unit. The small switch was completly melted. After changing the switch unit al workes very well. The problem is the high current on de small switch because it is a motorhome with extra lights. Now I will change this by using a relay instead of the small switch. Is there somebody who has done this and can tell me which wires(pins) I must use or has a wire diagram how to do this? My motorhome is a Hobby 600 based on a fiat ducato x244 from 2004. I hope someone can help me.

 

[Communicator]

Hi paflo,

I assume that it is the side and rearlights diagram that you require. I will attach Fiat eLearn diagram E2010. Following the sidelight circuit through the ignition switch is not easy. To help my understanding I have made my own diagram of the ignition switch. If using it, note that there is a cicuit across my diagram where there is a solid square. I also think that my LHS cab fusebox diagram should help. I fitted an extra relay to release the cab windows when parked, via an external timer, and push button.

If you have only one circuit for your additional lights, I suggest operating your relay from F24. You could obtain a supply for your lights, by adding the connection insert at thbottom of F36 as I did. By adding inserts to one of the spare relay locations you could locate your relay in the fuse box, but probably easier outside of the fusebox. You would need to extend the relay coil -ve to an earth and find/reroute your extra lights connection to the relay.

Warning the inserts for the fuses are relatively easy to remove, and the inserts for the relay coils are possible, but I have failed when trying to remove the larger relay contact connecting inserts. That is the reason for my suggesting an externally mounted relay.