Where does this go? Alternator resistor

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Where does this go? Alternator resistor

Postby Hatya » Sat Dec 08, 2018 8:00 am

I am doing a one wire alternator install on my 93 d350 and it came with this resistor.


https://www.napaonline.com/en/p/ECHAD1214

I guess I’ve forgot to much In my old age, where does this go and why?
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Re: Where does this go? Alternator resistor

Postby cougar » Sat Dec 08, 2018 9:28 am

Last time I saw something like that was on an old point type voltage regulator.
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92 W250 HD 47RH with Compushift. Upgraded H1C to 60/60/16, modified fuel pin, DAP 7X.010 injectors, 4" DE exhaust.
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Re: Where does this go? Alternator resistor

Postby PToombs » Sat Dec 08, 2018 2:46 pm

I've never heard of putting a resistor in with a 1 wire alternator. I would contact whoever you got it from and ask them.
pete

Just enough power to break everything behind the crankshaft.
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Re: Where does this go? Alternator resistor

Postby Richie O » Tue Dec 11, 2018 8:06 pm

PToombs wrote:I've never heard of putting a resistor in with a 1 wire alternator. I would contact whoever you got it from and ask them.

The last one I did that required a resistor was putting a 3 wire ac delco on my farmall tractor. I thought the same Pete, the single wires went direct to the battery. Maybe the resistor keeps it from draining? I think a resistor only allows voltage or current to go in one direction? On edit, I think its a diode that does that, I have not hit the books for a while on electronics.
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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Re: Where does this go? Alternator resistor

Postby PToombs » Wed Dec 12, 2018 6:16 pm

Richie, a resistor reduces voltage, and a diode lets current go only 1 way. Good save! ;)
pete

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Re: Where does this go? Alternator resistor

Postby Richie O » Thu Dec 13, 2018 11:08 am

PToombs wrote:Richie, a resistor reduces voltage, and a diode lets current go only 1 way. Good save! ;)


Yup I knew that, but had to catch myself. :roll: I guess I put my fingers in gear before my brain.
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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