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CS130 Alternator - 1 Wire Conversion
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DRR Trophy
posted
Trying to use a CS130 alternator (7888-3A) w/ 4 pin plug in a one wire race application, and was wondering what combination of pin-jumping will get this unit to self excite, if possible.

Probably not the best option, but Mopar low mount alternator brackets are limited and I already had this unit. Alternative options welcome.

This message has been edited. Last edited by: A39Coronet,
 
Posts: 119 | Location: Outside | Registered: May 08, 2014Reply With QuoteReport This Post
DRR Sportsman
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You need to replace the internal regulator, in order for it to work properly.

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Posts: 268 | Location: Toronto Ont/Surprise AZ | Registered: August 18, 2003Reply With QuoteReport This Post
DRR Pro
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A39, as stated above, for a true one wire conversion, the regulator must be replaced.

Another option, you can apply ignition on power to the "I" terminal [one of the four small pins, look closely, the letters are small]


Larry Woodfin



 
Posts: 1828 | Location: Kilgore TX | Registered: March 12, 2004Reply With QuoteReport This Post
DRR S/Pro
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Why not run it as is? It will charge better because you can put the sense wire where you want the voltage maintained at. In my opinion the benefits are worth the extra wires, especially if you have a relocated battery in the back. I have a stock one on my car and have run it this way for years.


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Posts: 1829 | Location: San Angelo | Registered: March 07, 2005Reply With QuoteReport This Post
DRR Trophy
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Here's a link to a self exciting regulator.

https://store.alternatorparts.com/d411se.aspx
 
Posts: 6 | Location: Bloomsburg | Registered: January 31, 2009Reply With QuoteReport This Post
DRR Trophy
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S wire to relay board or remote solenoid sensing wire.

L wire to a switched 12v with a 194 bulb in the circuit.
 
Posts: 12 | Location: indianapolis in | Registered: July 12, 2006Reply With QuoteReport This Post
DRR Pro
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quote:
Originally posted by aaron vail:
S wire to relay board or remote solenoid sensing wire.

L wire to a switched 12v with a 194 bulb in the circuit.


You could also substitute a 300 ohm 1 watt resistor for the 194 bulb.
 
Posts: 2446 | Location: 53056 | Registered: December 30, 2009Reply With QuoteReport This Post



DRR Pro
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After some experimenting, I learned the 194 bulb while OK, is not required.

The OE regulator is of such a design that once the alternator is energized the "I" terminal by design is internally taken out of the circuit.


Larry Woodfin



 
Posts: 1828 | Location: Kilgore TX | Registered: March 12, 2004Reply With QuoteReport This Post
DRR Pro
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find a local rebuilt shop if you have one they can do it for you.


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Brian Martin
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Posts: 1385 | Location: Va.Beach .Va | Registered: August 03, 2005Reply With QuoteReport This Post
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X2
quote:
Originally posted by banjo:
Why not run it as is? It will charge better because you can put the sense wire where you want the voltage maintained at. In my opinion the benefits are worth the extra wires, especially if you have a relocated battery in the back. I have a stock one on my car and have run it this way for years.


RT
An "old" racer turned pit crew.
 
Posts: 11 | Location: ON Canada | Registered: November 29, 2006Reply With QuoteReport This Post
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