Yellow/Constant power wire on my 93 tempo is not working, solution?

I Just recently installed a new deck in my 93 ford tempo and it wouldnt turn on with the yellow wire connected, so we instead connected it with he red wire and that worked but the deck will no keep it's memory now, I'm not entirely sure if I'm giving enough information but feel free to ask me questions, thanks for the help!

Added (1). Not only down the memory not stay, but it very often shows an error alert and stops working completely and i have to reset the deck

Run another wire from a constant power source, even the battery, to the yellow wire on the deck. Did you check all fuses?

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