[villagetinker]

Originally Posted by Rando

Thanks, Tinker. Does this mean the switched power supply is available on the ignition switch itself or somewhere else? Also, what type of relay would be appropriate?

After seeing some of the follow-up replies, I will suggest an alternative, have a USB adapter installed on your cart, this will supply 5 volts to the speakers, wiring these to anything else in the cart would provide 12 volts and damage the speakers. This is a very small load, and you should have no problem. These are available on Amazon, and I can do the install if you cannot find anyone. If you have an overhead tray, the USN adapter can be installed there which will tend to hid the speaker wires, and the power wires to the USB adapter can run up the windshield support (possibly inside the support). Let me know if you want help.