I Just bought an fm transmitter and since i hate the stupid plug and
all the wires i hard wired it to the car. first is this safe? also my
power supply to the transmitter is always on even when the key is out.
and the red LED on the transmitter is always on. My main question is,
is it ok to leave it on all the time?, and will it drain my battery? i
already did it to my sirius radio. My transmitter is a Monster brand
one, i provided a link below for reference:

http://www.radioshack.com/product/in...&tab=summar y

Thanks!

My main question is, is it ok to leave it on all the time?

No.

and will it drain my battery?

Yes. However, the exact design of the model will determine if it is a
problem.

You wired it up to the wrong wire. I assume you mounted it next to the head
unit? If so, there are 3 power feeds you could use.

1. Permanent live (this is what you've used) Often Red.
2. Switched live (this is what you want) Often Yellow.
3. Auxilliary power out (you can use this too) Often Blue/White.

Sometimes red and yellow are swapped (i.e. some Vauxhalls). Sometimes they
are random colours.

The switched live goes with the ignition. The Auxilliary power comes on when
either the stereo is on, or just the radio. It is intended to switch
electric aeriels and amplifiers.

Christian.

Sweet all done! drilled a hole in the center consul, and istalled a hot
LED switch connected both the sirius and the transmitter to the switch
then soldered them! looking very good!