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 or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Distributorless Ignition System (DIS) Module

The distributorless ignition system (DIS) module supplies the engine RPM signal input to the integrated circuit (IC), located in the instrument cluster. The DIS module receives an engine RPM input from the crankshaft position sensor (CPS).