Re: Delco Alternator Wiring - Reversed Terminals

Posted by Bus Driver on December 31, 2004 at 03:24:06 from (66.226.37.76):

In Reply to: Delco Alternator Wiring - Reversed Terminals posted by Jim Bloss on December 30, 2004 at 15:17:20:

To comment additionally about the device in the lead to terminal#1, exciter, to prevent igniion feedback, the choices are a lamp, a resistor, or a diode. On the tractors that IH equpped with Delco 10si alternators, IH used a 25 ohm wirewound resistor. The typical alternator instrument panel warning light has about 55 ohms. I think the resistor is the most rugged of the 3 and the simpler to install- unless one needs the warning light as an indicator. Since the exact value of the resistor is not critical, I use 44 ohm 5 watt wirewound which the local electronic supplier has. Do not fail to attach lead #2 to a point where it can pickup (sense) the voltage of the system. If not attached, the output voltage may become high enough to ruin the diodes in the alternator.

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