so i bought a 240 couple days ago and my friend decides to cut off the wires that connected the tac ( i dont know why it had a tac) and now my speedo and rpm doesnt move at all, same with my seatbelts (89 240) the fuel indicator works as well as the back lights but i cant seem to figure out whats wrong. the previous owner had a wiring mess and its been driving me nuts (e-fan had no ground, stupid things like that) any suggestions would be very helpful.