We only have 1 actual Sunline whole camper wiring diagram and that is for a 2004 T2499. I was from my camper at the time and I had requested it from Sunline before they closed. See here in our files section. Scroll to the bottom to see it Sunline Coach Owner's Club - Sunline Owner's Files - Sunline Electrical, Lighting & Charging Systems
You do need to be logged in to down load. The Files section is the tab called FILES across the top area of the forum, click it and you can go in thee to find a good amount of camper info.
That T2499 wiring diagram will be different then your older camper as the power converter and the AC breakers have changed much since then. But it gives you an idea of what one would look like if we had one. There are some other diagrams that members have sent us in that file section but most deal with the DOT lights and not the actual 120 VAC or 12 VDC camper internal wiring.
Which part of the camper do you need help with? We may be able to help. Posting pictures also greatly helps. We have sorted out wiring messes before from just pictures.
Hope this help
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
Google Custom Search For Sunline Owners Club