radio electrical hook up

[duneseven]

I am going to put an xm on the nomad I am wondering how to tie it in electrically. The auxiliary leads are hot all the time so is a relay needed and is there a ignition switched wire in the battery area to energize the relay or can I just add it to something else without a problem the xm power supply has it's own fuse so maybe that helps somewhat... HELP

[cactusjack]

You would be fine using the accessory 12v connection in the headlight bucket to power an XM radio. If it were a 100W amp or something, I'd advise you to run a dedicated circuit from the battery.

If it were me, I would connect the 12v accessory power to a relay and then connect the coil side of the relay to a switched power source, like one of the running lights. That way the radio only has power when the ignition switch is on.