Quote: Originally Posted by
Ramanator 
Question DP;
Is the current on the ACC line Constant or is their a pulse just at start ups?
The current on the ACC line will be constant.
Basically the M2ATX (as well as other SSDC and PSUs that incorporate a SSDC) senses the current on that line and the circuitry will determine what to do.
If the PC is off and the ACC line goes hot, the PSU sends the signal to the motherboard to initiate bootup.
If the PC is on and the PSU senses 0v on the ACC line, it will press to button to initiate shutdown.
A pulse is sent on the two-wire lead to the motherboard to initiate boot up. Basically it simulates a press of the power button.
Quote: Originally Posted by
SkaLou I should have been more clear. I will make a better, more detailed drawing of my setup. Darque, you're definately sending me in the direction I need to go, jumbodogs, thank you as well. I've got essentially all of my wiring in place, and my system works as it is.
I previously had an NTE933 in for the PC, but I took that out when I got the M2-ATX. The other regulators are for other devices. I put everything on one switch so when I get in the car, I can just flip a switch and everything turns on. Should I do as jumbodogs said and simply move my push button over to the PSU, and the PSU to the motherboard? Or is there more I should be doing to take full advantage of the features of this PSU? I mean, how I have it, it works (well, it should in theory, the PSU is still in transit). All the wiring is in place like this, but if I need to I can switch it to have a better setup.
There are a number of routes you could take.
IMHO, the simplest would be to power everything from the M2ATX, assuming it has the oomph to handle all your devices.
Wire it all up the same way I described previously. One button makes the ACC (or IGN) line go hot and the M2ATX powers up all your devices.
There are other methods of achieving what you want using relays, POL power supplies and so on, but this would be the simplest.
Again, others may disagree or have a better solution for you and your setup. Hopefully they'll throw you some suggestions, too.