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American Autowire 27555 GM External to SI-Series Alternator Conversion Kit

Manufacturer

Picture for manufacturer Wired Harnesses

Part Number

27555
12 reviews
Sale Price

$32.38

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The American Autowire 27555 alternator conversion kit provides a simple plug-in solution for converting 1963-1974 GM vehicles with external voltage regulators to 1969-1985 GM SI-series internal regulator alternators. This conversion kit eliminates the need for the external voltage regulator mounted on the radiator support, allowing you to upgrade to more reliable, internally regulated alternators.

Key Features:

  • Plug-in conversion design—no cutting or splicing required
  • Compatible with GM 10SI, 10DN, and 12SI alternator case styles
  • Pre-terminated wire ends with correct wiring plugs
  • Works with 1985 and earlier SI-series internal regulated alternators
  • Bypasses factory external voltage regulator
  • Includes adapter harness to connect between stock wiring and alternator

This conversion kit is ideal for classic GM restorations and restomods, allowing you to upgrade to the more reliable and widely available SI-series alternators while maintaining compatibility with your original wiring harness. The kit includes all necessary components for a complete plug-and-play installation.

very easy

A little slow at the server to place the order.

Great price

very easy

thank you, quick easy. Great prices!

I love simple, easy and fast, and ordering from you met this criteria. Thank you!

It was easy to order and the truck bed extender we bought was the lowest price we could find! However, the shipping charge was higher than what was posted on the comparison sight. Nevertheless, it still came in under the next highest price from a different vendor.

In google chrome the amazon login didn't work. I couldn't get all my info in and it wouldn't continue from shipping section because it didn't allow state entry. Web issues. When I tried from IE, it worked really great. You are probably losing people who a

Thank you

good so far

Web site has a lot of items without much description.

slight hiccup with payment, but paypal triumphed over Amazon!

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