Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la
If it fails: lemon-manuals.org.ua

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Distributor: Application and ID

HEI distributors with EST can be identified by the following;
- They have no distributor mounted vacuum controls--spark timing is controlled electronically.
- With EST system uses a seven terminal High Energy Ignition (HEI) module