Skip to content
Clear product details Fitment guidance Contact support
RepairRoute Parts for the job in front of you.

10si 12 Si alternator charge wire plug with diode keeps alternator charging at low RPM 12AWG wire | Repair and Installation Guide

$19.99

63 ratingsSource: Amazon
SKU: C-B09V5FFWMG Category:

Repair and use view: Evaluate 10si 12 Si alternator charge wire plug with diode keeps alternator charging at low RPM 12AWG wire as part of a Alternators repair or use case. The source states: Category: Replacement Parts / Starters & Alternators / Alternators & Generators / Alternators.

Plan the job around this additional source detail: This plug connects into Delco 10Si and 12Si alternators and used to excite the alternator to charge correctly and works good on older vehicles, there is a diode to prevent voltage feedback. Ready to plug into ’73 & up GM internally regulated alternator Special diode prevents engine run and voltage feedback. White wire length: 100CM; Red wire length: 20CM. Use a job-planning lens: access, tools, connectors, fasteners, and installation sequence.

Before you order
  • Confirm the part number, position, dimensions, and connector details shown on this page.
  • Compare the listing with the part currently installed on your vehicle.

Description

Repair, installation, and use context

Evaluate 10si 12 Si alternator charge wire plug with diode keeps alternator charging at low RPM 12AWG wire in the context of a Alternators repair, installation, or use case. The source application detail is: Category: Replacement Parts / Starters & Alternators / Alternators & Generators / Alternators.

Plan access, tools, and surrounding components around this supporting source detail: This plug connects into Delco 10Si and 12Si alternators and used to excite the alternator to charge correctly and works good on older vehicles, there is a diode to prevent voltage feedback. Ready to plug into ’73 & up GM internally regulated alternator Special diode prevents engine run and voltage feedback. White wire length: 100CM; Red wire length: 20CM. Confirm this final recorded point before work begins: ▲White wire length: 100CM; Red wire length: 20CM.

Job-planning boundary

The page preserves the supplied facts but does not infer an unlisted vehicle, installation method, or repair result.

Complete source-backed product details

This plug connects into Delco 10Si and 12Si alternators and used to excite the alternator to charge correctly and works good on older vehicles, there is a diode to prevent voltage feedback.

Ready to plug into ’73 & up GM internally regulated alternator

Special diode prevents engine run and voltage feedback.

White wire length: 100CM; Red wire length: 20CM

Source product highlights

  • ▲Delco alternator 10Si and 12Si alternator excit wire plug with diode
  • ▲Ready to plug into ’73 & up GM internally regulated alternator
  • ▲Special diode prevents engine run and voltage feedback
  • ▲White wire length: 100CM; Red wire length: 20CM
  • ▲QUALITY ASSURANCE – Made of high quality material ,our wire plugis durable and can be used for a long time.

Product facts

Specifications

Canonical product
MP-US-B09V5FFWMG
Source product ID
B09V5FFWMG
Category
Replacement Parts / Starters & Alternators / Alternators & Generators / Alternators
Available images
5

No structured vehicle fitment data is available. Compare the listing with the vehicle and existing part before ordering.

Repair scenarios, installation, companion parts, and use outcomes

Buying guidance

Quick decision

Review this alternators in the context of the repair and the surrounding components.

Repair scenario

  • Identify the symptom and confirm that this is the component required by the repair.
  • Inspect nearby connectors, fasteners, and mating surfaces before installation.

Installation notes

  • Use the listing instructions when present and follow the vehicle service procedure.
  • Professional installation may be appropriate when the repair requires special tools or calibration.

Companion parts

  • Inspect nearby fasteners, connectors, seals, fluids, and wear items before starting the repair.
  • Use the service procedure and the visible package contents to identify any additional parts or tools required.

Before you buy

  • Compare the listing title, photos, package contents, and specifications with the part being replaced.
  • Confirm vehicle compatibility and installation requirements before ordering.

Customer feedback

Ratings and written reviews

3.2 / 5 63 source ratings

Source: Amazon. Imported marketplace feedback is shown for product research and is not a review of a purchase made on this website.

11 written reviews
5 stars 3
4 stars 2
3 stars 1
2 stars 0
1 star 5

11 reviews for 10si 12 Si alternator charge wire plug with diode keeps alternator charging at low RPM 12AWG wire | Repair and Installation Guide

  1. Imported from AmazonSource context: Verified Purchase

    Ray

    The delco remy wire pigtail with diode.The diode was in back to front.very disappointed to say the least

  2. Imported from AmazonSource context: Verified Purchase

    Rafael Chavez

    Después de la instalación el alternador no carga porque no hay voltaje en la terminal correspondiente al cable blanco. Después de revisar la instalación pude comprobar que el diodo esta defectuoso y muestra una alta resistencia. Por una cuarta parte del precio se puede comprar el conector y el diodo y hacerlo uno mismo.

  3. Imported from AmazonSource context: Verified Purchase

    george

    Diode is wired in backwards

  4. Imported from AmazonSource context: Verified Purchase

    mr g r marrone

    The diode is the wrong way around and the connectors are so loose it will require a little work but does the job

  5. Imported from AmazonSource context: Verified Purchase

    Charles Dorst

    Diode was wired in backwards and many reviews indicate the same problem. By the time you correct their problem you could have made your own for half the money. See the photo of diode. The thick silver band goes toward the alternator.

  6. Imported from AmazonSource context: Verified Purchase

    Connor McLean

    Very frustrating. The diode is needed to ensure voltage is not backfed to the ignition coil once the ignition switch turned off. Without the diode, the engine will not shut off. But, it has to be installed in the right direction! Had to snip it out and solder it in correctly.

  7. Imported from AmazonSource context: Verified Purchase

    Customer

    Works ss expected for my c15

  8. Imported from AmazonSource context: Verified Purchase

    DJ

    Its a nice cable assembly, but as others have stated the diode was wired in backward. Luckily i had another connector, so i just depinned the connector and swapped the white wire around.

  9. Imported from AmazonSource context: Verified Purchase

    Customer

    Perfect fit.old one fell apart.

  10. Imported from AmazonSource context: Verified Purchase

    Joseph Woods

    Part was ready to go diode was fixed the right way

  11. Imported from AmazonSource context: Verified Purchase

    Kyle foley

    Used it on a tractor and it worked very well

Add a review

Your email address will not be published. Required fields are marked *