so after my kenwood HU was stolen, i put in my stock HU (2000 tacoma). this one differs from the 4runner HU in that there is no factory "amp". there are 2 plugs that go into the back of the HU versus 2 plugs going into the amp and one to the HU like i believe was in my 4runner. so along with those 2 plugs, i have the antenna connection as well. i thought when i first plugged the HU in it was fine (though im not positive it ever worked this time around - it worked when I removed it in May 2006), radio worked and whatnot, but now, only the CD player works. when I switch to FM, its just static. if i unplug the antenna, it picks it up a little better, but still real faint and static-y. the antenna cable doesn't look severed or anything, doesn't seem im missing any wires, everything looks in order. what could it be?