Re: Using a mini-alternator with 3 wire connection

Posted by farmallhal on November 28, 2005 at 07:33:23 from (64.24.35.16):

In Reply to: Using a mini-alternator with 3 wire connection posted by R-cubed on November 27, 2005 at 09:56:15:

R3, I converted my H to 12 volts using a Hitachi 14231 alternator which is smaller then a Delco/GM type. Bob Melville's wiring diagrams show the wiring for a Delco 10SI alternator. The identification of the terminals on my Hitachi differ from those on a Delco. The terminal which is a theaded stud and by itself on the Hitachi is the "Bat" connection. It connects to a 12 volt feed wire coming from the battery through the starter switch and ammeter. The wire from the "S" terminal on my Hitachi connects directly to the Bat terminal also with a short jumper wire. "S" (is for sense) and the same as the No. 2 terminal in Bob's diagram. The "L" terminal on the Hitachi will need to run through a warning light or a resistor (to excite the alternator to charge) to the coil side of the ignition switch and and then to the "+" terminal on the coil. This is the same as the No. 1 terminal in Bob's diagram. Both connections to these spade termainals on the alternator will need to be made with insulated push on connectors. You will need to install a ballast resistor in this wire somewhere between the switch and the coil. You will also need to run a wire from the "-" terminal on the coil to the distributor connection. Hope this helps. Hal

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