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Chris..... ....One of the reasons that the early 70's GM Delco 10-SI 12 volt alternator is popularily used for 12 volt conversions, they're cheap, widely available, and they have a built-in voltage regulator. So when you say you used an external 2-terminal voltage regulator, that confuses me. When you say you used alternator terminals F & R, they don't ring a bell with me eather. Most Delco SI-10 alternators have 3-terminals. A BIG STUD to go to the battery to charge it. And 2-blade terminals, called P-1 (excite) and P-2 (remotes sense). Could make the arguement that P-2 is what you are calling "R" for remote. Can't figger what "F" on an alternator could stand for. If it is just a simple case of mis-naming, I'd guess that if "R" is remote sense, the you should take a short jumper wire and connect it to the BIG BATT stud. This tells the built-in voltage regulator how much volts to put out to charge the battery. In a car where the battery can be mounted quite some distance from the alternator, the line loss could be significant. In a tractor conversion, line loss is negligible. That makes a guess at what "F" means. Normally, P-1 (excite) is connected thru an idiot light wired to the same ignition "ON" terminal that the ignition coil is connected. Without the idiot light, the alternator will feed back battery voltage to the ignition coil even after you turn the ignition key OFF the engine will continue to run. So you need some sort of alternator excite isolation scheme. GM likes to use the idiot light scheme..... ..... .HTH, Dell
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