97 Dodge Caravan Stereo Problem

Who knows- I say your best bet is to run new power from the ignition harness and call it good.

Price range- are you asking how much a shop would charge?  It would depend on where you go and what all you have them do.  You could just have them run a constant and accessory lead (you should have the rest already- ground and speakers).  Then just have them tape off the ends so they don't touch anything and zip tie them in place so they don't fall back in the dash.  Another option would be to have them do all the wiring- or you could have someone do the complete install.  It's up to you.

I reread one of your posts- you said you're grounded to the edge of the inner walls that holds the deck in.  It sounds like your grounded to nothing- the metal cage that holds the radio in place- but this is supported by the plastic kit, and is not grounded.  If you're unsure what to do about ground- you may actually have power to both wires- you can do what is suggested here: http://www.installdr.com/Harnesses/DCP-Wiring.pdf.  Did you plug in the antenna?  That would give you a ground to test and see if it will turn on.

yea the antenna is pluged in everytime. Then I would switch on the acc or start up the car, still no good. I moved it to the far back of the dask where its all metal and where everything else seems to be grounded on also.

I would like to know the price of the part itself, but if all comes to worst I could take it to the shop and just have them wire the whole thing over again.