MP3Car.com - View Single Post

ddogg_777 · 09-04-2004, 05:16 PM

Quote: Originally Posted by DjBac

I tried to use my car's steering wheel controls..
But i have a problem...

it has 4 wires.. ACC,GROUND,TX+ and TX-.
I connect +12v to ACC ground to GROUND and then check volts to TX+ and TX-..
But the volts don't change!!
Either 2,5 and 12V...
Am I doing something wrong??

That sounds okay to me. When god_of_cpu hooked up 5V to his controls he also would get three voltages (1.5V, 3V, and 5V) to correspond to mode, vol up, and vol down. The changing voltage is actually changing the current.
Yours should work fine!

09-04-2004, 05:16 PM	#43
ddogg_777 Maximum Bitrate Join Date: Apr 2003 Location: HOT Arizona Posts: 832	Quote: Originally Posted by DjBac I tried to use my car's steering wheel controls.. But i have a problem... it has 4 wires.. ACC,GROUND,TX+ and TX-. I connect +12v to ACC ground to GROUND and then check volts to TX+ and TX-.. But the volts don't change!! Either 2,5 and 12V... Am I doing something wrong?? That sounds okay to me. When god_of_cpu hooked up 5V to his controls he also would get three voltages (1.5V, 3V, and 5V) to correspond to mode, vol up, and vol down. The changing voltage is actually changing the current. Yours should work fine!