I'm helping my buddy wire is '46 Chevy pickup/'92 S10 hybrid. Basically it's a '46 Chevy pickup body on a '92 S10 frame with a 350 in it. My problem is the alternator. It has 4 wires in the connector labeled f, s, p, l. I've searched until I'm blue in the face and have come up with conflicting reports of how to wire the thing. The alternator is off the 4.3 liter that was in the s10 and the wiring harness looks to be only using the "S" and the "P" terminals. One goes to a switched 12 volt source and supposedly the other goes to a gauge or idiot light with resistor in parallel (in case the bulb goes out). Is this right or do I use the "F" to switched power and "S" to gauge/idiot light?