I am wanting to buy a harness for my vehicle to install a system in it. When I am researching the harness options, they all say not for premium systems. My vehicle has a stock amp in it, is that what it is talking about?
Possibly--it depends on the vehicle. For example, most Chrysler Infinity systems will work fine with a standard wire harness, even though it says not for premium systems. Many GM vehicles have factory amps, but they're designed for use with a standard head unit, so they'll work fine with an after-market head unit using a standard harness. On the other hand, most Bose and JBL systems use a low-level output from the head unit to the stock amp(s), so a standard harness wouldn't work as well unless you used it with a premium sound adapter module. I'm pretty sure the standard harness will work for you Santa Fe's Monsoon system. You'll have to make sure to connect the wire in the harness that activates the factory amplifier.
