And then the two small terminals, The s terminal should get 12V when the key is in the srart position. 9 times out of 10 the I terminal is not used, but if it is, it should send 12V to the positive side of the ignition coil only while the starter motor is turning. If your car has a balast resister, then this terminal will not be used. If the solonoid switch is on the passenger side inner fender, than the big terminal closest to the front of the car, should be the battery terminal (the one with more than one wire, and the other big terminal goes to the starter only. Once again, the bracket is the only ground to the solonoid switch. I hope this helps some.
[addsig]