stereo wiring

[dboi801]

So im installing a dual double din in my 2003 cadillac deville. i connected all my wires at one point i had illumination but that was it the face didnt power up or anything i just need to know if there is anything im doing wrong or if there is anything i need to know. thank you

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[keep_hope_alive Premium Member]

what GMOS adapter did you use?  Note that the car doesn't have an ignition wire, so  GMOS adapter is used to generate the turn-on signal.  Usually around $100.