Have RV Questions? Ask an RV Mechanic Online.
Do you have the Owner's Manual for this? All the fuses and wiring diagrams are in there. It would either have a shortstop breaker or fuse on the control board (if it has one) depending on the system hardware. I looked and don't see a manual for a 2000 Landyacht XL or I would attach it for you. If you can give me the make of your slide hardware I can give you more information.
Just checking back in to see if you were able to resolve this issue or do you still need some additional input from me here?