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Hello,I will be glad to try and assist you with this,Welcome to Just Answer.
O.k.,what cables or wires did you connect from your radio to this yellow cable?
Let me know,Thanks Pete.
o.k.,your radio should have two power wires coming from it,one is for when you turn on the ignition to send power to turn on the radio and the other wire is for constant battery power all the time to kep the clock set an the radio stations set.If you only have one of these pwer wires connected then this is why your radio is only coming on temporarily,you will have to check your decks wiring diagram to see which wire from your deck needs power when the keyn is turned on and which wire needs power all the time,if your vehicles harness doesnt have a constant power wire then you will have to run one from the battery or fuse box from a fuse that does have constant power all the time,I have seen this problem before and this is usually the cause,all decks have two power wires,a ground,a power feed wire to power up power antennaes and amplifiers and then they have speaker wires as well.
was the old radio a stock radio in this vehicle and did it have a clock on it or keep radio stations in memory?
Let me know,Thanks Pete
ok then most likely your old radio had a constant power source as well,since you have extra wires from the dash most likely one of these wires is a constant power wire,the fuse may have blown for this wire,check your fuses and see if any of them are blown and replace them as needed,also make sure you have the radio wired right,dont just match up colors as this will fry the new deck,most electronic stores sell a kit that will converte your existing dash wiring to fit your new deck these usually cost $10 to $15 andf are easy to install with instructions.Check to make sure its wired correctly and check your fuses and make sure one isnt blown,you had to have had a constant power wire if your old radio kept the radio stations programmed into the deck as it needs the constant power to do this.
I hope this helped,Thanks Pete.