CDR23 harness question

[sd_boxster]

I'm still very happy with the addition of a JVC headunit to my Boxster (JVC KD-AVX44 piggyback on CDR-23). However, my only complaint is that the Boxster radio stays on for a few seconds after ignition off, but the modulator turns off as soon as the key comes out - so for a few seconds, the CDR23 plays whatever is coming in on FM.

Does anyone know if there's +12v wire in the harness for the CDR23 that's used to switch the amp in the frunk - or another +12v accessory wire coming from the CDR23? I'd like to tap that for the RF modulator so the modulator is powered whenever the CDR23 is on.

Thanks in advance!