2024 THOR Sanctuary 19L - Led Light Bar Not Working

[ajf332]

Hello I have a 2024 Sanctuary 19L on a 2022 4x4 diesel sprinter chassis. The light bar is no longer working. I have checked all fuses located under the driver's side seat as suggested in other posts and they are good. None of them are marked or listed as to what they are connected to though. I have no power to the switch on the lower left hand side of the dash. I am not sure what those colors mean or refer to as I cannot find a wiring diagram that includes the light bar. The wires at the switch are yellow, yellow with black stripe and white. The switch seems to be working according to ohm meter. Can anyone offer any more advice on what to look for or how to fix this? Thank you.

 

[Rawolf]

Hello I have a 2024 Sanctuary 19L on a 2022 4x4 diesel sprinter chassis. The light bar is no longer working. I have checked all fuses located under the driver's side seat as suggested in other posts and they are good. None of them are marked or listed as to what they are connected to though. I have no power to the switch on the lower left hand side of the dash. I am not sure what those colors mean or refer to as I cannot find a wiring diagram that includes the light bar. The wires at the switch are yellow, yellow with black stripe and white. The switch seems to be working according to ohm meter. Can anyone offer any more advice on what to look for or how to fix this? Thank you.

Hello,
I had a similar issue with my 2024 Thor 19P. Light bar on roof from factory was never tested when we picked it up from Blue Compass dealer in November 2024. Since the coach was under warranty I took it to a local Camping World RV dealer for them to prepare a warranty ticket through Thor in February 2025. The tech found the wiring issue and resolved it. It has been working fine since then. Here is the language from the repair ticket. CAUSE - "switch not getting power when back feeding the system found relays click indicating that the power source to relay is not good" CORRECTION - "rewire from switch all the way to relay underneath seats and relay all the way in the back. requested 8 hours to remove body panels, remove DS seat, trace wires back and run new wires, reinstall seat and panels and test". Good luck. Hope you are enjoying your new van. We are enjoying ours.

 

[ajf332]

Thank you for your reply. I will be rewiring the switch with a new fused power wire.