Thread: M2-ATX - Powers up PC when ignition is off!

Hello,
I don't know much about many cars, but have you removed a stock radio unit to try this? If so, it could be that it was using a non-standard system.

I do however know a bit about electronics, and logic would suggest that there is something wrong with the loom - Your battery would slowly lose charge if not used and then your car would fail to start.

I realise this is obvious stuff that i've just said, but just talking through things can sometimes help. Do you have a car electronics store / good electronics friend nearby that can go through your wiring?

It may also be worthwhile stating your car make/model and the previous unit you removed to allow others to help you out.

Kind regards,
James

well, i have not heard of a ignition setup like that, but i wouldn't doubt one fo teh companies would do it just to mess aftermarket things up

maybe there is another acc. wire that you could tie into(one that turns on with the key, the proper way)?

otherwise, you might need to use a relay to reverse it..

are you sure you have wired the m2-atx correctly, it sounds like you have a wired the battery to the ignition line rather than the battery line, it would power up when you switch off the ignition the 5v would shutdown the power supply because of the low voltage.