This circuit will bypass the ignition switch signal in order to keep an M1-ATX on after the key is turned off. The push button and LED are mounted on the dash. To keep the PC on during a quick stop, I push the button before turning off the key. The LED lights up to indicate the Latched on state. The system will automatically reset to normal (unlatched) the next time the key is turned on. The circuit will also unlatch if the PC turns off for any reason (low battery, software shutdown, PC power switch, etc.) This circuit has been tested with M1-ATX, but should work for other SDC's with ignition control signal.
Since the Mute line in a car may be already used, adding a Handsfree Kit or other device with a Mute line needed some "glue" logic.
Common Car Mute line function is active low, a 74HCT08 2-Input AND Gate is used so any low input will cause a low output to the radio. A 7805 5V regulator is used to power the logic gate. Pull up resistors are added to keep the input/output stable preventing any unwanted mute condition caused by drifting line levels. If more than 1 Mute line needs to be added, a 74HCT11 3-Input AND Gate can be used instead.
I'm looking for the pinout of a 2003 ford cd-6(indash 6-disc changer) 20 pin cd changer.I'm trying to get aux input out of it!Ive looked and looked and If anyone could help me it would be appreciated!
For anyone looking for any kind of connection description forward this link. Is the most complete and easy to understand Connector description (graphic & text) I have found.
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