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 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

Reed Switch Check





1. Check that the speedometer operates correctly.
2. Start the engine. Do not disconnect the connectors. Check the continuity between terminals (1) and (2) while moving slowly the vehicle forward. The continuity and discontinuity should alternate.