cliffp

unlocked HP6515 fully functional, Full (all) contact transfer, 8)

Heres and cell phone list for the avic series units: [url=http://www.pioneer.co.uk/uk/campaign/support/bluetoothCompatibility_AVIC.html]http://www.pioneer.co.uk/uk/campaign/su ... _AVIC.html[/url] Cut and paste the above link !! Cliff

I understand your concerns about the dangers of transient voltage spikes on the AUX line. Normally, a good car battery will surpress all but a fraction of the spikes if a good heavy ground is used. I will add a 14.5 volts zener and possibly a Transient suppresser to the circuit. This way, the circuit would be safe in-case the car battery goes bad. It would basicly duplicate the 555 circuit power on the infomation center which came as a factory option (display Clk). The 555 timer I'm using has a nominal value of 14.5 Volts and is spec'd from 12.5 to 20 Vdc. Electronic experiance i

Do it yourself circuit.. I built the timer and it works perfectly. I would recommend that this only be tried by a person familiar with electronics !!