I need Help

i need like step by step instuctions on how to install my tach on a 1994 pontaic grand am plz help

Shouldn't be all that difficult... I'm assuming it's just a simple power, ground and tach signal hook up. Probably easiest to get your power from behind the radio. Constant 12V will be orange or orange with black stripe, switched accessory will be yellow and ground will be black. There will probably be two yellow wires - the other one is for rear-left speaker, so make sure you grab the right one. If you have the 3.1L V6, tach signal will be at the ignition coil on the top-rear of the motor. It will be a white wire.