I don’t know the differences between the “T” & “X” series of the Cruiser RV campers but for a given series, I’m guessing that the standard amenities are likely the same across the models in the series. I’m also guessing that the amenities could be the same over the span of a few years. That said, the ‘07 “X” series radio/CD & DVD player was the QX-3202 by Quest Engineering. Mine fits into the space between the above range microwave and the above sink cupboard. I do suppose that a radio/CD/DVD player might be considered “optional” in the “T” series but the “X” series had it as standard equipment. If no speakers are to be found anywhere in the camper, that might indicate optional rather than standard. RE: being “hardwired”, it’s likely less expensive for a manufacturer to use a wiring harness that can be used for all possible options in a given model rather than maintaining separate stocks of harnesses for campers with different options. Bottom line, if I was in the OP’s situation, I believe that ProfDan’s solution of a smartphone and a Bluetooth speaker might just be the route that I’d be taking.
If you're not livin' on the edge, you're takin' up too much space!
2007 Shadow Cruiser x210, 2004 RAM 2500 4x4 QuadCab SLT 5.9L CTD, Factory Tow Pkg (3.73 axle), HaulMaster WDH