Hi gjbenoit
Welcome to Sunline Owners Club. Glad you found us and glad to have you with us.
There are 2 sets of DC lights on the campers. The 12 volt DOT lights run by the truck and the 12 VDC lights inside the camper.
Which area are the 3 not working on? Inside the camper or the outside tail light, etc.
In our files section up top, see tab called files, there is 1 wiring diagram off a 2004 T2499 interior. It is all we have for the inside. Yours may be a little different I'm sure but may not be all that different and it can be used as a guide to help trouble shoot.
As we have seen before on wiring problems, it ends up being a hunt and search mission. Let us know which system they are not working on and what area of the camper. We can maybe tell you where to start the hunt.
Hope this helps
John
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Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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