ipod 92 vw passat, is relay required

I'm installing this.......

http://www.crutchfield.com/S-aFHwPcRk6iP/App/Product/Item/Main.aspx?i=206PDRCAV2&id=detailed_info

and this.......

http://www.crutchfield.com/App/Product/Item/Main.aspx?search=modulat&i=142FMMOD01

on a 1992 VW Passat with stock radio. The radio has a couple of switched powers for things like factory ACTIV amp (which is not being used) and power antenna. Can I tap into one of those to power up these two new components without a realy? Or do you think those 2 items will create too much of a draw and I should use a relay?

Thanks

So no relay is required for wiring the ipod adapter and the FM modulator off of the amp turn-on wire on the back of the radio?

I planned on not using a on/off switch on the modulator and just wiring it up to the amp turn-on wire on the radio. Are you saying that if the modualtor is on, no other radio stations will come in? The modulator HAS to be turned off to listen to other FM stations?

I already have the antenna adapters. The stock radio is a remaining. This is a show car and the must have stock looking interior....

No this is NOT the case.... just what ever frequency your modulator is using will be un able to receive any REAL FM. If your modulater is real close to a real FM station, you could get some bleed over. Otherwise don't worry. No need to turn it off. Although the on/off switch isn't a bad idea.....

PHEW! Thanks for clearing that up.

My plans are to have the FM modulator and the ipod adapter/charger turn on with the radio only. Being wired by the amp turn-on wire on the back of the radio. 

So can it be verified that a relay won't be required for these components?

Radio is Passat, car itself is actually a GTI.

Hard-wired has to be shut-off to receive other stations???

That sucks. I'm so not down for an on and off switch. Looks like i'm gonna have to get a wireless transmitter. Can anyone recommend one that I can hardwire and hide, I don't want to plug it into my cigarette lighter....