Can anyone tell me which wire is for the Throttle Position Sensor. Also when I look at the timing pulley I see 4 small marks very close together. Right now the index is pointing to the mark closest to the firewall with the TPS connected. That seems to say that the timing is very much retarded. Will disconnecting the TPS change that? It seems that I should be shooting for the second mark from the front of the car. Is this correct. Thanks.