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Technical Services

Whether you are an engineer at an OEM with an application issue, or a consumer with an installation question, we are here to provide the answers you need.

Prestolite Electric has highly skilled professionals available to answer your questions on the installation, service and maintenance of our products.

You can start your search here, with the materials we have available on-line. If you can not find the answers you are looking for here, please contact us.

Check out our new Support Forum!

This is an open forum, where you can review common questions and answers. You can also ask your own questions, and place your comments in on-going discussions.
This is still early in the launch phase, and we're still adding questions and answers from our existing Knowledge base. Be sure and check it out, and let us know what you think!
Click here

Download our new US Products Catalog!

2020 US Quick Reference Buyer's Guide
(PDF, 7592K, Oct 5, 2020 )
Click here

We have updated technical service bulletins on how to test and trouble shoot our alternators

A flowchart showing how to test an alternator on a test stand. Click here
A complete step-by-step procedure on how to test an alternator on a test stand. Click here
A complete step-by-step procedure on how to test an alternator while still on a vehicle. Click here
A visual inspection guide to determine failure modes that will not be covered under warranty Click here

We now have our complete cross reference and application database available on-line!

Find the cross reference area here

Find the application look up here

Alternator and Starter Motor Buyer's Guide

Available to view on-line or download, find in-depth sections on:
  • the battery system
  • the charging system
  • the starting system
This is an invaluable information resource, and the download versions (available in Microsoft Word and Adobe Acrobat formats) have additional sections containing:

Available to view on-line or download, this document gives you a step-by-step process to follow to trouble-shoot a heavy duty vehicle's electrical system. There is a corresponding flowchart also available to view on-line or download.

Technical Bulletins

This area contains our most requested technical bulletins, with information on everything from pulley sizing to brush replacement instructions.

Starter Motors

Technical Support

You can count on Prestolite / Leece-Neville's nationwide organization of authorized service distributors and original equipment dealers for complete warranty service, rapid warranty administration, and parts replacement support. Click here to find a dealer or sales representative near you.

Our expanded Technical Support Group can provide complete product operating specifications to help you select the right alternator, starter motor, or instrument for your application.

In addition, our Technical Support Group can help train your service personnel and offer troubleshooting advice for specific situations. All this support is only a toll free phone call or e-mail away. Knowledgeable, experienced technical representatives are ready to help you keep your operation running smoothly.

To contact our customer service group:
By Phone: (800)354-0560
By E-mail:
Or ask your question on the web and send it to us here