MTCD PX5 - External power supply - Any info

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ale_kons

Senior Member
Apr 26, 2016
64
4
0
Zurich
Hi Folks,

I am in need of wiring hardness for the MTCD (PX5) uni so i can connect to an external power supply so i can configure at home (no internet connection at parking lot).
I will use a computer PSU i have spare and connect to the head-unit but i don't know what cables i need and where to find them .

Any idea where can i find one ?

Thanks
Alex
 
Last edited:

SilentO

Senior Member
Jan 31, 2008
393
24
38
Hi Folks,

I am in need of wiring hardness for the MTCD (PX5) uni so i can connect to an external power supply so i can configure at home (no internet connection at parking lot).
I will use a computer PSU i have spare and connect to the head-unit but i don't know what cables i need and where to find them .

Any idea where can i find one ?

Thanks
Alex

would like to know as well
 

faria

Inactive Recognized Developer / Retired Senior Mod
Feb 24, 2006
2,915
770
0
45
Jersey
in all devices that i tested at home i found you need at least a power supply of 12V 15amps.
Power supply i use here
As for connecting the unit Red and yellow wire to +
and black to -
best way is to get a Universal Male ISO Radio Wiring Harness
some units use a small thin red wire now just for signal.
your devices should have the a wiring schematic either glued to the case or in the instructions book.

make sure the unit is properly fused and get spare fuses before attempting the above.
 

notime2d8

Senior Member
Jul 31, 2007
303
93
0
Birmingham
I use a small sla 12v battery from wheel chairs and power-wheels. Then i have a couple of spare harnesses from ebay. The harnesses on these radios are generic and can be had for about $4 USD like this one Link
 

Mr.Jimbo

Member
Jun 7, 2016
8
0
0
@neosnd On my unit I had a thick yellow (batt +12v) and thick black (ground). Thin red (Acc +) which is your ignition feed (so unit has a constant 12v on the yellow, red 12v+ turns the unit on)

On a computer PSU (search ATX pinout) like this: http://www.smpspowersupply.com/connector_atx_pinout.GIF - you want to find a 12v (pin 11 or 12 - Yellow 12v+), ground (any "com" - pin 3,5,7 but in our case easier to use 24 (near 11/12)) and for our purposes you can just twist the red acc+ into the 12v power (yellow) so the unit is always on. If not just use one of the spare 12v. then all we need to do is short the "PSU on" (Pin 16) to any ground (pin 16 to 17 with a paperclip if you want to mcguyver it like I do) - then power switch on computer PSU turns the power on and off.

Check to see if your unit has a pinout on top, mine had a sticker saying which was the 12v, ground etc which I worked this out from. If not, google your car stereo pinout, see where the 12v, ground and acc+ feeds are and mirror them onto the plug to your unit.

Hope this helps!