Mobile DVR Powered From PC PSU?

[pete87]

Hi, am looking for advice on powering a mobile DVR for a car from a pc power supply, I have seen/read this being done with a car stereo. The connections I have are "9-28VDC" "engine switch" and "GND", would I be right in saying that the 9-28VDC and the engine switch will go to the 12v out let from PSU and the ground will go to the ground from PSU would this work?, I have fuses in place on the engine switch and 9-28VDC,
I need to put a fuse on the GND (just waiting on them to arrive) as stated in book. if anymore info/pics is needed I will upload.

Thanks Pete

Pic of wiring on DVR

This it what I have connected on the PSU

 

[shanky887614]

what is the rating of the dvr for a start?

why don't you buy a proper psu?

if you dont know what your doing this would be a lot better.

usually other than the 5v rail on a psu is turned off till some pins are shorted out on the 24pin connector

 

[pete87]

sorry the rating was on the picture that was trying to upload (I have now mange to upload them).
the DVR is for a car so it has a 5 pin (2 for camera output), is there anything to convert a plug to a 12v output if what is it called I cant find anything that does it?.
am not 100% sure if it is ok that's why I came here for some advice, I have put a pic in the first post of the pins that I have connected to turn the PSU on and it power no problem, an just not sure if the PSU and the DVR will be ok running 9-28VDC and the engine switch from the same 12v Molex from the PSU?.