I bought a very nice 87 mustang gt convertable and the only thing it needed was a heater core. I had it put in and the guy who did it pulled some wires out of the plug for the covertable top. I wired the plug back, it has power to the plug but not to the motor. Something went wrong because the turn signals don't work eather. I have driven it a couple times and one day the head lights wouldn't come on. The fuse box where the headlight fuse is was tested with a tester and it has no power for that fuse at the fuse box. Is there a fusable link somwhere I can check for any of these problems? I have no idea where to look to fix these problems. Anyone that can help i would greatly appreciate it. It all worked before he changed the heater core and removed the dash when he did it. Please Help!