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O3rado415
02-02-2004, 02:12 PM
i have a 2003 silverado and i just bought a new deck...i got all the parts and gm class 2 data bus interface which is like a wiring harness...my problem is that it doesnt work like the factory and the guys at circuit city told me it would work like it usually does if i solder it or use connectors and its still not workin right...and i dont want to keep going back and fourth there waisting my time...any suggestions on how to make it work??
idbl_Fanatic
02-02-2004, 02:16 PM
What are you trying to get to work?
O3rado415
02-02-2004, 02:23 PM
a pioneer deh-3500
idbl_Fanatic
02-02-2004, 02:38 PM
Originally posted by O3rado415
a pioneer deh-3500

Ok, but what are you trying to get it to do that it wont?
O3rado415
02-02-2004, 02:47 PM
turn on when the engine isnt running because thats da only time it does work
idbl_Fanatic
02-02-2004, 02:52 PM
ok, so you want it to turn on when you turn the key off? or are you talking about like it will play until you open the door??

If you wish to keep the radio (or any other device that is powered by an accessory circuit) on until a door is opened, you can do so by creating a latch when the accessory is turned on with the relay shown below on the left, then breaking ground to the latch when a door is opened as shown with the relay below on the right. While this will keep the radio on, the entire accessory circuit will see 12V+ until a door is opened with the key in the off position.
http://www.the12volt.com/images/raddelay.gif


If you want to prevent 12V+ from feeding back into the accessory circuit or have more than one device on this circuit and do not want all of them to stay powered, you can isolate the device you want to stay powered by cutting the accessory lead going to it and adding two 1 amp diodes and an additional relay as shown below. The first diode near the top left of the diagram is to prevent 12V+ from going back into the accessory circuit. The second diode between terminals 87 and 86 prevents the radio from pulling current through the first diode. If the second diode is not in place, the first diode will become toast. The additional relay is needed to prevent the radio from turning off when the key is in the accessory position and a door is open.

http://www.the12volt.com/images/raddelay3.gif
O3rado415
02-02-2004, 05:50 PM
ummm thats a little toooo hard for me to understand...im a newbie about wiring
O3rado415
02-03-2004, 01:12 AM
i got it working...circuit city gave me a bad box...thanx for the help though