This is the manual on my 2004 Sunline Voyager radio/CD player. I'm not sure if Sunline changed the model or not in the 2005 campers. https://www.asaelectronics.com/downl...ers_manual.pdf
It really does not list with amperage or watts it needs to run on. It states it can push 50 watts to the speakers. Not sure what voltage they are using in the speaker circuit, but if you measured 0.370 amps with it just on and not playing a CD, well that can be what it is.
If you are looking at this from trying to boondock off grid on battery power only, and we camp that way often, just take the unit out of the cabinet and pull the fuse. That is what I do, we do not listen to it, so not need to waste the power. When plugged into shore power, they give you a very large power converter to create 12 volts and it will power any and all things in the camper.
And if you are wanting to only run on battery, change out the light to LED's. The old incandescent draw 1.4 amps each. That is a lot of power on 1 light bulb. LEDs can be 0.2 amps
Hope this helps
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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