17' Series Isolate bedend lights

[bennoonan92]

I am adding some sirocco fans to the bed ends and looking to utilize the existing light wires there but can not find how to isolate that circuit.
Anyone know where/how it is connected?

This is for a 2010 Jayco Expanda Outback 17.52-2

Thanks for any insight

 

[Drover]

Assume it has a Setek ST system running the show, often the fuse labels are incorrect I have found, so just pull each fuse till the lights go out but first check the wiring at the switch, the circuit should be live on the battery side of the switch not on the light side, in my 2009 I found the circuit was wired wrong so the circuit on the light side was live so adding extra lights caused drama, a simple fix though....... Just tap into the live side of the light switch to draw power ............. Of course if the fuse is elusive just pull the pin on the battery and shut down the whole lot .