iPod Install in '94 850 Gone Wrong

[M81388]

Hi, i own a 1994 Volvo 850 and yesterday i decided i was going to put down $250 and get an iCruze to hardwire my iPod straight to my car. Now, apart from the lengthy and difficult procedure of installing it, when I was done, whenever i moved my stereo left to right, up or down, the stereo would turn on and off, and I struggled with this problem for hours, untill i said "screw it!" and returned the icruze. I then noticed that the iCruze was not the problem, because even after i removed it, the radio still turned on and off as i moved it. I think I may have messed some wiring up while trying to install the iCruze. Please help me out, any suggestions would help. Thanks.