sony explode wiring info

i have a 1985 Saab 900 S and i put a sony explode in the car. It had to be hardwired in because i dont have the adapter. The radio works fine except when i turn the car off the radio resets like the battery got disconnected. The time, radio stations, and everything is like when the radio was first installed. I know something is wired wrong but i cant figure out what. Please help me figure out how to wire it correctly.

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Sean

   Hook the gray wire of your factory harness to your constant 12v of your radio...of course i recomend testing first with a dmm, if you have access to one....Also hook the red wire of your factory harness to your switched wire of your radio....again if you have access to a dmm I  would recomend using it..

i've done that but the radio still resets to factory settings when the car turns off.  is there anything else that could be wired wrong.

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Sean

If your radio is resetting then the 12V memory is losing power.  if you tried to find a constant wire in the radio harness and it still resets find another wire.  If you tried that too, then the best thing to do is run a wire all the way to your battery....fuse it of course....and your problem is solved! 

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...half of the truth can be worse than a lie. <----Roger Russell said that..

    Do what joch1314 stated above..If problem still exists have your battery checked.