Good product but be careful
Crutchfield Customer Review (What's this?)
Good product, works like it says. It provides a rock solid, no cut splice. The only problem is my XM uses 5v not 12v like the battery provides. There's a circuit board in the power adapter that ramps down the 12v current from the battery into 5v for the XM radio. If I followed the instructions included in the kit and just connected the wires from the power adapter straight to a 12v switched source and a ground it would have fried my radio the first time I turned it on. I called Crutchfield's technical line and was walked through other options. I did keep the connectors because they do work well, you just need to be careful before connecting an XM satellite radio.