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73-87 Chevy _ GMC Trucks => Electrical => Topic started by: Stowburb on April 15, 2015, 05:08:57 pm

Title: CS alt. to an SI alt wiring
Post by: Stowburb on April 15, 2015, 05:08:57 pm

Anyone know how to wire a CS style Alternator to an SI style alternator wiring harness?

Title: Re: CS alt. to an SI alt wiring
Post by: enaberif on April 15, 2015, 08:05:32 pm

Why do you want to go old to new style? The newer style is better?

Title: Re: CS alt. to an SI alt wiring
Post by: bd on April 15, 2015, 08:29:58 pm

SI to CS conversion (http://novaresource.org/alternator.htm)

     ...In addition, use the Search (http://forum.73-87chevytrucks.com/smforum/index.php?action=search) engine to locate threads on this Forum.

Title: Re: CS alt. to an SI alt wiring
Post by: enaberif on April 15, 2015, 09:28:09 pm

Hmm I misread what they typed.

Napa Echlin EC81 or Echlin EC82 is the adapter you need. CS130 will bolt up directly with next to no issues.

Title: Re: CS alt. to an SI alt wiring
Post by: gmachinz on April 17, 2015, 03:32:34 pm

You'll want to upgrade your main supply voltage wire size to at least 8ga since you now have the capability to put out considerably more amperage if needed.

Title: Re: CS alt. to an SI alt wiring
Post by: enaberif on April 17, 2015, 06:49:52 pm

Yup I put a 8g wire from the alternator to my battery. I haven't upgraded the wire to the junction block yet.