I decided to help out one of my friends hook up a sony tape deck in his 94 integra, but now whenever he turns off his car the radio presets disappear...is there some kind of memory wire or something to prevent this from happening....if so wat is it...thanks for any input

 

Yes there is a memory wire... http://www.installdr.com/Harnesses/HA-Wiring.pdf

What is the make and model of the HU? Most use red as acc. [switched] and yellow as the constant 12V+

Also check the back up power fuse, fuse 47 - 7.5A, [hot at all times] in under hood fuse box. 94

 

thanks a lot....its a really old radio...we just put it in b/c hes selling the car but he wanted to sell it w/ a radio of sum sort...thanks again for that link it really helps!!!!!